* known oom issues on numa in -mm tree?
@ 2011-01-06 8:03 CAI Qian
2011-01-11 0:04 ` David Rientjes
0 siblings, 1 reply; 13+ messages in thread
From: CAI Qian @ 2011-01-06 8:03 UTC (permalink / raw)
To: linux-mm
Hi,
Did anyone notice the oom issues on numa systems in -mm tree? There are several of oom tests using cpuset and memcg are either waiting for a long time to trigger oom or hung completely. Here were some sysrq-t output while those were happening.
CAI Qian
oom02 R running task 0 2057 2053 0x00000088
0000000000000282 ffffffffffffff10 ffffffff81098272 0000000000000010
0000000000000202 ffff8802159d7a18 0000000000000018 ffffffff81098252
01ff8802159d7a28 0000000000000000 0000000000000000 ffffffff810ffd60
Call Trace:
[<ffffffff81098272>] ? smp_call_function_many+0x1b2/0x210
[<ffffffff81098252>] ? smp_call_function_many+0x192/0x210
[<ffffffff810ffd60>] ? drain_local_pages+0x0/0x20
[<ffffffff810982f2>] ? smp_call_function+0x22/0x30
[<ffffffff81067df4>] ? on_each_cpu+0x24/0x50
[<ffffffff810fdbec>] ? drain_all_pages+0x1c/0x20
[<ffffffff811003eb>] ? __alloc_pages_nodemask+0x4fb/0x800
[<ffffffff81138b59>] ? alloc_page_vma+0x89/0x140
[<ffffffff8111c011>] ? handle_mm_fault+0x871/0xd80
[<ffffffff8149fd6b>] ? schedule+0x3eb/0x9b0
[<ffffffff811187a0>] ? follow_page+0x220/0x370
[<ffffffff8111c68b>] ? __get_user_pages+0x16b/0x4d0
[<ffffffff8111eaa0>] ? __mlock_vma_pages_range+0xe0/0x250
[<ffffffff8111eecb>] ? mlock_fixup+0x16b/0x200
[<ffffffff8111f219>] ? do_mlock+0xc9/0x100
[<ffffffff8111f398>] ? sys_mlock+0xb8/0x100
[<ffffffff8100bfc2>] ? system_call_fastpath+0x16/0x1b
oom04 D ffff880218416b50 0 2027 2025 0x00000080
ffff88021b0c5498 0000000000000086 0000000000000001 0000000000000000
ffff8802184165c0 0000000000014d80 ffff88021b0c5fd8 ffff88021b0c4010
ffff88021b0c5fd8 0000000000014d80 ffff88021f2055c0 ffff8802184165c0
Call Trace:
[<ffffffff814a03a0>] io_schedule+0x70/0xc0
[<ffffffff8120a1a8>] get_request_wait+0xc8/0x1a0
[<ffffffff81082930>] ? autoremove_wake_function+0x0/0x40
[<ffffffff812030a7>] ? elv_merge+0x47/0x210
[<ffffffff8120a2eb>] __make_request+0x6b/0x4d0
[<ffffffff81208144>] generic_make_request+0x214/0x5a0
[<ffffffff810f9f95>] ? mempool_alloc_slab+0x15/0x20
[<ffffffff810fa133>] ? mempool_alloc+0x63/0x150
[<ffffffff81208556>] submit_bio+0x86/0x110
[<ffffffff811027e2>] ? test_set_page_writeback+0xf2/0x1a0
[<ffffffff8112aeb3>] swap_writepage+0x83/0xd0
[<ffffffff811070ee>] pageout+0x12e/0x310
[<ffffffff81108efb>] shrink_page_list+0x32b/0x600
[<ffffffff81109336>] shrink_inactive_list+0x166/0x480
[<ffffffff811478d9>] ? mem_cgroup_get_local_zonestat+0x99/0xc0
[<ffffffff8110112a>] ? determine_dirtyable_memory+0x1a/0x30
[<ffffffff811099b3>] shrink_zone+0x363/0x510
[<ffffffff8108cca9>] ? ktime_get_ts+0xa9/0xe0
[<ffffffff81109c23>] do_try_to_free_pages+0xc3/0x500
[<ffffffff8110a1b9>] try_to_free_mem_cgroup_pages+0xa9/0x130
[<ffffffff81148eae>] mem_cgroup_hierarchical_reclaim+0x29e/0x430
[<ffffffff8114ada0>] __mem_cgroup_try_charge+0x480/0x5a0
[<ffffffff8114b792>] mem_cgroup_charge_common+0x52/0x90
[<ffffffff8114b955>] mem_cgroup_newpage_charge+0x55/0x60
[<ffffffff8111c043>] handle_mm_fault+0x8a3/0xd80
[<ffffffff8103ea89>] ? kernel_map_pages+0x109/0x110
[<ffffffff8100c9ae>] ? apic_timer_interrupt+0xe/0x20
[<ffffffff8100c9ae>] ? apic_timer_interrupt+0xe/0x20
[<ffffffff814a5f23>] do_page_fault+0x143/0x4d0
[<ffffffff8105a1fc>] ? pick_next_task_fair+0xfc/0x130
[<ffffffff8149fafb>] ? schedule+0x17b/0x9b0
[<ffffffff814a2995>] page_fault+0x25/0x30
oom02 R running task 0 2375 2373 0x00000088
ffff88010ded2f40 0000000000000086 ffff88041a75b5a8 ffffffff81215541
ffff8801e6065e90 ffff8801e6065e90 ffff88041a75b5c8 ffffffff81203054
ffff88041a75b5c8 ffff880214e1a8f8 0000000000000001 ffff8801e6065e90
Call Trace:
[<ffffffff81215541>] ? blkiocg_update_io_merged_stats+0x61/0x90
[<ffffffff81203054>] ? elv_merged_request+0x84/0x90
[<ffffffff8120a6be>] ? __make_request+0x43e/0x4d0
[<ffffffff81208144>] ? generic_make_request+0x214/0x5a0
[<ffffffff810f9f95>] ? mempool_alloc_slab+0x15/0x20
[<ffffffff810fa133>] ? mempool_alloc+0x63/0x150
[<ffffffff81208556>] ? submit_bio+0x86/0x110
[<ffffffff811027e2>] ? test_set_page_writeback+0xf2/0x1a0
[<ffffffff81103b92>] ? pagevec_move_tail+0x112/0x130
[<ffffffff81104216>] ? __pagevec_release+0x26/0x40
[<ffffffff811080bb>] ? putback_lru_pages+0x26b/0x2c0
[<ffffffff8103e467>] ? __change_page_attr_set_clr+0x807/0xd20
[<ffffffff8103e467>] ? __change_page_attr_set_clr+0x807/0xd20
[<ffffffff81109415>] ? shrink_inactive_list+0x245/0x480
[<ffffffff81101303>] ? throttle_vm_writeout+0x43/0xb0
[<ffffffff814a2192>] ? _raw_spin_lock+0x12/0x30
[<ffffffff8103ea89>] ? kernel_map_pages+0x109/0x110
[<ffffffff8113e95e>] ? cache_free_debugcheck+0x2ce/0x370
[<ffffffff8121e769>] ? free_cpumask_var+0x9/0x10
[<ffffffff810ffd60>] ? drain_local_pages+0x0/0x20
[<ffffffff8100c9ae>] ? apic_timer_interrupt+0xe/0x20
[<ffffffff81098272>] ? smp_call_function_many+0x1b2/0x210
[<ffffffff81098252>] ? smp_call_function_many+0x192/0x210
[<ffffffff810ffd60>] ? drain_local_pages+0x0/0x20
[<ffffffff810982f2>] ? smp_call_function+0x22/0x30
[<ffffffff81067df4>] ? on_each_cpu+0x24/0x50
[<ffffffff810fdbec>] ? drain_all_pages+0x1c/0x20
[<ffffffff811003eb>] ? __alloc_pages_nodemask+0x4fb/0x800
[<ffffffff81138b59>] ? alloc_page_vma+0x89/0x140
[<ffffffff8111c011>] ? handle_mm_fault+0x871/0xd80
[<ffffffff8149fafb>] ? schedule+0x17b/0x9b0
[<ffffffff8100ca8e>] ? invalidate_interrupt5+0xe/0x20
[<ffffffff8100c9ae>] ? apic_timer_interrupt+0xe/0x20
[<ffffffff814a5f23>] ? do_page_fault+0x143/0x4d0
[<ffffffff8100a7b4>] ? __switch_to+0x194/0x320
[<ffffffff8149fd6b>] ? schedule+0x3eb/0x9b0
[<ffffffff814a2995>] ? page_fault+0x25/0x30
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* Re: known oom issues on numa in -mm tree?
2011-01-06 8:03 known oom issues on numa in -mm tree? CAI Qian
@ 2011-01-11 0:04 ` David Rientjes
2011-01-11 1:36 ` CAI Qian
0 siblings, 1 reply; 13+ messages in thread
From: David Rientjes @ 2011-01-11 0:04 UTC (permalink / raw)
To: CAI Qian; +Cc: linux-mm
On Thu, 6 Jan 2011, CAI Qian wrote:
> Hi,
>
> Did anyone notice the oom issues on numa systems in -mm tree? There are
> several of oom tests using cpuset and memcg are either waiting for a
> long time to trigger oom or hung completely. Here were some sysrq-t
> output while those were happening.
>
sysrq+m would be interesting to see the state of memory when you suspect
we're oom.
> CAI Qian
>
>
> oom02 R running task 0 2057 2053 0x00000088
> 0000000000000282 ffffffffffffff10 ffffffff81098272 0000000000000010
> 0000000000000202 ffff8802159d7a18 0000000000000018 ffffffff81098252
> 01ff8802159d7a28 0000000000000000 0000000000000000 ffffffff810ffd60
> Call Trace:
> [<ffffffff81098272>] ? smp_call_function_many+0x1b2/0x210
> [<ffffffff81098252>] ? smp_call_function_many+0x192/0x210
> [<ffffffff810ffd60>] ? drain_local_pages+0x0/0x20
> [<ffffffff810982f2>] ? smp_call_function+0x22/0x30
> [<ffffffff81067df4>] ? on_each_cpu+0x24/0x50
> [<ffffffff810fdbec>] ? drain_all_pages+0x1c/0x20
This suggests we're in the direct reclaim path and not currently
considered to be in the hopeless situation of oom.
> [<ffffffff811003eb>] ? __alloc_pages_nodemask+0x4fb/0x800
> [<ffffffff81138b59>] ? alloc_page_vma+0x89/0x140
> [<ffffffff8111c011>] ? handle_mm_fault+0x871/0xd80
> [<ffffffff8149fd6b>] ? schedule+0x3eb/0x9b0
> [<ffffffff811187a0>] ? follow_page+0x220/0x370
> [<ffffffff8111c68b>] ? __get_user_pages+0x16b/0x4d0
> [<ffffffff8111eaa0>] ? __mlock_vma_pages_range+0xe0/0x250
> [<ffffffff8111eecb>] ? mlock_fixup+0x16b/0x200
> [<ffffffff8111f219>] ? do_mlock+0xc9/0x100
> [<ffffffff8111f398>] ? sys_mlock+0xb8/0x100
> [<ffffffff8100bfc2>] ? system_call_fastpath+0x16/0x1b
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* Re: known oom issues on numa in -mm tree?
2011-01-11 0:04 ` David Rientjes
@ 2011-01-11 1:36 ` CAI Qian
2011-01-11 3:18 ` David Rientjes
0 siblings, 1 reply; 13+ messages in thread
From: CAI Qian @ 2011-01-11 1:36 UTC (permalink / raw)
To: David Rientjes; +Cc: linux-mm
> sysrq+m would be interesting to see the state of memory when you
> suspect we're oom.
SysRq : Show Memory
Mem-Info:
Node 0 DMA per-cpu:
CPU 0: hi: 0, btch: 1 usd: 0
CPU 1: hi: 0, btch: 1 usd: 0
CPU 2: hi: 0, btch: 1 usd: 0
CPU 3: hi: 0, btch: 1 usd: 0
CPU 4: hi: 0, btch: 1 usd: 0
CPU 5: hi: 0, btch: 1 usd: 0
CPU 6: hi: 0, btch: 1 usd: 0
CPU 7: hi: 0, btch: 1 usd: 0
Node 0 DMA32 per-cpu:
CPU 0: hi: 186, btch: 31 usd: 0
CPU 1: hi: 186, btch: 31 usd: 0
CPU 2: hi: 186, btch: 31 usd: 0
CPU 3: hi: 186, btch: 31 usd: 0
CPU 4: hi: 186, btch: 31 usd: 0
CPU 5: hi: 186, btch: 31 usd: 0
CPU 6: hi: 186, btch: 31 usd: 0
CPU 7: hi: 186, btch: 31 usd: 0
Node 0 Normal per-cpu:
CPU 0: hi: 186, btch: 31 usd: 0
CPU 1: hi: 186, btch: 31 usd: 0
CPU 2: hi: 186, btch: 31 usd: 0
CPU 3: hi: 186, btch: 31 usd: 0
CPU 4: hi: 186, btch: 31 usd: 28
CPU 5: hi: 186, btch: 31 usd: 0
CPU 6: hi: 186, btch: 31 usd: 0
CPU 7: hi: 186, btch: 31 usd: 0
Node 1 Normal per-cpu:
CPU 0: hi: 186, btch: 31 usd: 0
CPU 1: hi: 186, btch: 31 usd: 0
CPU 2: hi: 186, btch: 31 usd: 0
CPU 3: hi: 186, btch: 31 usd: 0
CPU 4: hi: 186, btch: 31 usd: 0
CPU 5: hi: 186, btch: 31 usd: 0
CPU 6: hi: 186, btch: 31 usd: 0
CPU 7: hi: 186, btch: 31 usd: 0
active_anon:1994685 inactive_anon:1533 isolated_anon:0
active_file:1004 inactive_file:3424 isolated_file:0
unevictable:0 dirty:3 writeback:0 unstable:0
free:1707554 slab_reclaimable:14808 slab_unreclaimable:97380
mapped:856 shmem:51 pagetables:4746 bounce:0
Node 0 DMA free:15888kB min:12kB low:12kB high:16kB active_anon:0kB inactive_anon:0kB active_file:0kB inactive_file:0kB unevictable:0kB isolated(anon):0kB isolated(file):0kB present:15664kB mlocked:0kB dirty:0kB writeback:0kB mapped:0kB shmem:0kB slab_reclaimable:0kB slab_unreclaimable:0kB kernel_stack:0kB pagetables:0kB unstable:0kB bounce:0kB writeback_tmp:0kB pages_scanned:0 all_unreclaimable? no
lowmem_reserve[]: 0 3255 8053 8053
Node 0 DMA32 free:2201196kB min:3276kB low:4092kB high:4912kB active_anon:0kB inactive_anon:0kB active_file:0kB inactive_file:0kB unevictable:0kB isolated(anon):0kB isolated(file):0kB present:3333976kB mlocked:0kB dirty:0kB writeback:0kB mapped:0kB shmem:0kB slab_reclaimable:0kB slab_unreclaimable:0kB kernel_stack:0kB pagetables:0kB unstable:0kB bounce:0kB writeback_tmp:0kB pages_scanned:0 all_unreclaimable? no
lowmem_reserve[]: 0 0 4797 4797
Node 0 Normal free:4605172kB min:4828kB low:6032kB high:7240kB active_anon:10688kB inactive_anon:6100kB active_file:3964kB inactive_file:13696kB unevictable:0kB isolated(anon):0kB isolated(file):0kB present:4912640kB mlocked:0kB dirty:12kB writeback:0kB mapped:3416kB shmem:204kB slab_reclaimable:22992kB slab_unreclaimable:169848kB kernel_stack:960kB pagetables:1784kB unstable:0kB bounce:0kB writeback_tmp:0kB pages_scanned:0 all_unreclaimable? no
lowmem_reserve[]: 0 0 0 0
Node 1 Normal free:7960kB min:8136kB low:10168kB high:12204kB active_anon:7968052kB inactive_anon:32kB active_file:52kB inactive_file:0kB unevictable:0kB isolated(anon):0kB isolated(file):0kB present:8273920kB mlocked:0kB dirty:0kB writeback:0kB mapped:8kB shmem:0kB slab_reclaimable:36240kB slab_unreclaimable:219672kB kernel_stack:224kB pagetables:17200kB unstable:0kB bounce:0kB writeback_tmp:0kB pages_scanned:0 all_unreclaimable? no
lowmem_reserve[]: 0 0 0 0
Node 0 DMA: 0*4kB 0*8kB 1*16kB 0*32kB 2*64kB 1*128kB 1*256kB 0*512kB 1*1024kB 1*2048kB 3*4096kB = 15888kB
Node 0 DMA32: 11*4kB 12*8kB 8*16kB 7*32kB 6*64kB 8*128kB 9*256kB 3*512kB 4*1024kB 2*2048kB 534*4096kB = 2201196kB
Node 0 Normal: 1487*4kB 916*8kB 533*16kB 348*32kB 192*64kB 136*128kB 104*256kB 54*512kB 25*1024kB 7*2048kB 1086*4096kB = 4605100kB
Node 1 Normal: 955*4kB 11*8kB 5*16kB 0*32kB 0*64kB 0*128kB 0*256kB 0*512kB 0*1024kB 0*2048kB 1*4096kB = 8084kB
4484 total pagecache pages
0 pages in swap cache
Swap cache stats: add 2446987, delete 2446987, find 397/515
Free swap = 0kB
Total swap = 0kB
4194288 pages RAM
355106 pages reserved
4066 pages shared
2059455 pages non-shared
> > oom02 R running task 0 2057 2053 0x00000088
> > 0000000000000282 ffffffffffffff10 ffffffff81098272 0000000000000010
> > 0000000000000202 ffff8802159d7a18 0000000000000018 ffffffff81098252
> > 01ff8802159d7a28 0000000000000000 0000000000000000 ffffffff810ffd60
> > Call Trace:
> > [<ffffffff81098272>] ? smp_call_function_many+0x1b2/0x210
> > [<ffffffff81098252>] ? smp_call_function_many+0x192/0x210
> > [<ffffffff810ffd60>] ? drain_local_pages+0x0/0x20
> > [<ffffffff810982f2>] ? smp_call_function+0x22/0x30
> > [<ffffffff81067df4>] ? on_each_cpu+0x24/0x50
> > [<ffffffff810fdbec>] ? drain_all_pages+0x1c/0x20
>
> This suggests we're in the direct reclaim path and not currently
> considered to be in the hopeless situation of oom.
The question here is why it was taking so long (can't oom after tens' of
minutes) even swap devices disabled. As you can also see from the above
sysrq-m output, the test did exhaust the Node 1 Normal zone.
Thanks.
CAI Qian
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^ permalink raw reply [flat|nested] 13+ messages in thread
* Re: known oom issues on numa in -mm tree?
2011-01-11 1:36 ` CAI Qian
@ 2011-01-11 3:18 ` David Rientjes
2011-01-11 3:35 ` CAI Qian
0 siblings, 1 reply; 13+ messages in thread
From: David Rientjes @ 2011-01-11 3:18 UTC (permalink / raw)
To: CAI Qian; +Cc: linux-mm
On Mon, 10 Jan 2011, CAI Qian wrote:
> Node 0 DMA free:15888kB min:12kB low:12kB high:16kB active_anon:0kB
> inactive_anon:0kB active_file:0kB inactive_file:0kB unevictable:0kB
> isolated(anon):0kB isolated(file):0kB present:15664kB mlocked:0kB
> dirty:0kB writeback:0kB mapped:0kB shmem:0kB slab_reclaimable:0kB
> slab_unreclaimable:0kB kernel_stack:0kB pagetables:0kB unstable:0kB
> bounce:0kB writeback_tmp:0kB pages_scanned:0 all_unreclaimable? no
> lowmem_reserve[]: 0 3255 8053 8053
> Node 0 DMA32 free:2201196kB min:3276kB low:4092kB high:4912kB
> active_anon:0kB inactive_anon:0kB active_file:0kB inactive_file:0kB
> unevictable:0kB isolated(anon):0kB isolated(file):0kB present:3333976kB
> mlocked:0kB dirty:0kB writeback:0kB mapped:0kB shmem:0kB
> slab_reclaimable:0kB slab_unreclaimable:0kB kernel_stack:0kB
> pagetables:0kB unstable:0kB bounce:0kB writeback_tmp:0kB pages_scanned:0
> all_unreclaimable? no
> lowmem_reserve[]: 0 0 4797 4797
> Node 0 Normal free:4605172kB min:4828kB low:6032kB high:7240kB
> active_anon:10688kB inactive_anon:6100kB active_file:3964kB
> inactive_file:13696kB unevictable:0kB isolated(anon):0kB
> isolated(file):0kB present:4912640kB mlocked:0kB dirty:12kB
> writeback:0kB mapped:3416kB shmem:204kB slab_reclaimable:22992kB
> slab_unreclaimable:169848kB kernel_stack:960kB pagetables:1784kB
> unstable:0kB bounce:0kB writeback_tmp:0kB pages_scanned:0
> all_unreclaimable? no
> lowmem_reserve[]: 0 0 0 0
> Node 1 Normal free:7960kB min:8136kB low:10168kB high:12204kB
> active_anon:7968052kB inactive_anon:32kB active_file:52kB
> inactive_file:0kB unevictable:0kB isolated(anon):0kB isolated(file):0kB
> present:8273920kB mlocked:0kB dirty:0kB writeback:0kB mapped:8kB
> shmem:0kB slab_reclaimable:36240kB slab_unreclaimable:219672kB
> kernel_stack:224kB pagetables:17200kB unstable:0kB bounce:0kB
> writeback_tmp:0kB pages_scanned:0 all_unreclaimable? no
> lowmem_reserve[]: 0 0 0 0
[snip]
> > > oom02 R running task 0 2057 2053 0x00000088
> > > 0000000000000282 ffffffffffffff10 ffffffff81098272 0000000000000010
> > > 0000000000000202 ffff8802159d7a18 0000000000000018 ffffffff81098252
> > > 01ff8802159d7a28 0000000000000000 0000000000000000 ffffffff810ffd60
> > > Call Trace:
> > > [<ffffffff81098272>] ? smp_call_function_many+0x1b2/0x210
> > > [<ffffffff81098252>] ? smp_call_function_many+0x192/0x210
> > > [<ffffffff810ffd60>] ? drain_local_pages+0x0/0x20
> > > [<ffffffff810982f2>] ? smp_call_function+0x22/0x30
> > > [<ffffffff81067df4>] ? on_each_cpu+0x24/0x50
> > > [<ffffffff810fdbec>] ? drain_all_pages+0x1c/0x20
> >
> > This suggests we're in the direct reclaim path and not currently
> > considered to be in the hopeless situation of oom.
> The question here is why it was taking so long (can't oom after tens' of
> minutes) even swap devices disabled. As you can also see from the above
> sysrq-m output, the test did exhaust the Node 1 Normal zone.
>
I'm assuming you've setup a cpuset with cpuset.mems == 1 if you're citing
the fact that node 1 is exhausted (please confirm this since your initial
post said this was an issue with both cpusets and memcg, but failed to
give details on the actual configuration). ZONE_NORMAL for that node has
its all_unreclaimable flag still off, so it indicates it's still possible
to free memory before killing a task. You may also want to ensure that no
other tasks are dying in the background because the oom killer will
silently give them access to memory reserves so they can quietly and
quickly exit rather than killing something else in its place.
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^ permalink raw reply [flat|nested] 13+ messages in thread
* Re: known oom issues on numa in -mm tree?
2011-01-11 3:18 ` David Rientjes
@ 2011-01-11 3:35 ` CAI Qian
2011-01-11 9:46 ` CAI Qian
0 siblings, 1 reply; 13+ messages in thread
From: CAI Qian @ 2011-01-11 3:35 UTC (permalink / raw)
To: David Rientjes; +Cc: linux-mm
> I'm assuming you've setup a cpuset with cpuset.mems == 1 if you're
> citing
> the fact that node 1 is exhausted (please confirm this since your
> initial
> post said this was an issue with both cpusets and memcg, but failed to
> give details on the actual configuration). ZONE_NORMAL for that node
> has
> its all_unreclaimable flag still off, so it indicates it's still
> possible
> to free memory before killing a task. You may also want to ensure that
> no
> other tasks are dying in the background because the oom killer will
> silently give them access to memory reserves so they can quietly and
> quickly exit rather than killing something else in its place.
Sorry for the confusing. There are two tests - oom02 and oom04. oom02
tested cpuset on NUMA while oom04 tested cpuset and memcg on NUMA. The
above sysrq-m only referred to oom02. Although both tests indicated
problems, it is normal easier to solve it one-by-one. I can't see any
obvious tasks that were dying in background. Those were tests that were
running right after a fresh-installed system. Not sure if KSM was coming
in play here, as it was enabled and all of those allocations were using the
same memory contents. In any case, here was the additional sysrq-t output
when oom02 hung.
kswapd0 S ffff88021a566b50 0 81 2 0x00000000
ffff88021a5cbdc0 0000000000000046 0000000000000000 dead000000000000
ffff88021a5665c0 0000000000014d80 ffff88021a5cbfd8 ffff88021a5ca010
ffff88021a5cbfd8 0000000000014d80 ffffffff81a0b020 ffff88021a5665c0
Call Trace:
[<ffffffff8110a880>] ? kswapd+0x0/0x9e0
[<ffffffff8110b1d8>] kswapd+0x958/0x9e0
[<ffffffff8149fcab>] ? schedule+0x3eb/0x9b0
[<ffffffff81082930>] ? autoremove_wake_function+0x0/0x40
[<ffffffff8110a880>] ? kswapd+0x0/0x9e0
[<ffffffff810822a6>] kthread+0x96/0xa0
[<ffffffff8100ce04>] kernel_thread_helper+0x4/0x10
[<ffffffff81082210>] ? kthread+0x0/0xa0
[<ffffffff8100ce00>] ? kernel_thread_helper+0x0/0x10
kswapd1 R running task 0 82 2 0x00000000
0000000000000000 0000000051eb851f 0000000000000000 0000000000000000
ffff88021a5cdd70 ffffffff81167c09 ffff88042ffda290 ffff88042ffda288
ffff88021a5cdd70 ffffffffffffffff 000000061f995fd8 ffffffffa03d7540
Call Trace:
[<ffffffff81167c09>] ? shrink_icache_memory+0x39/0x330
[<ffffffff81106e39>] ? shrink_slab+0x89/0x180
[<ffffffff8110acc6>] ? kswapd+0x446/0x9e0
[<ffffffff8110a880>] ? kswapd+0x0/0x9e0
[<ffffffff810822a6>] ? kthread+0x96/0xa0
[<ffffffff8100ce04>] ? kernel_thread_helper+0x4/0x10
[<ffffffff81082210>] ? kthread+0x0/0xa0
[<ffffffff8100ce00>] ? kernel_thread_helper+0x0/0x10
ksmd S ffff88021a562b50 0 83 2 0x00000000
ffff88021a61fe30 0000000000000046 ffffffff8113c360 0000000000000000
ffff88021a5625c0 0000000000014d80 ffff88021a61ffd8 ffff88021a61e010
ffff88021a61ffd8 0000000000014d80 ffff88021f2055c0 ffff88021a5625c0
Call Trace:
[<ffffffff8113c360>] ? ksm_scan_thread+0x0/0xc30
[<ffffffff8113c360>] ? ksm_scan_thread+0x0/0xc30
[<ffffffff8113caf2>] ksm_scan_thread+0x792/0xc30
[<ffffffff81082930>] ? autoremove_wake_function+0x0/0x40
[<ffffffff8113c360>] ? ksm_scan_thread+0x0/0xc30
[<ffffffff810822a6>] kthread+0x96/0xa0
[<ffffffff8100ce04>] kernel_thread_helper+0x4/0x10
[<ffffffff81082210>] ? kthread+0x0/0xa0
[<ffffffff8100ce00>] ? kernel_thread_helper+0x0/0x10
CAI Qian
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* Re: known oom issues on numa in -mm tree?
2011-01-11 3:35 ` CAI Qian
@ 2011-01-11 9:46 ` CAI Qian
2011-01-11 9:55 ` CAI Qian
2011-01-26 10:45 ` David Rientjes
0 siblings, 2 replies; 13+ messages in thread
From: CAI Qian @ 2011-01-11 9:46 UTC (permalink / raw)
To: David Rientjes; +Cc: linux-mm
BTW, the latest linux-next also had the similar issue.
- kswapd was running for a long time.
runnable tasks:
task PID tree-key switches prio exec-runtime sum-exec sum-sleep
----------------------------------------------------------------------------------------------------------
R kswapd1 82 564957.671501 32922 120 564986.657154 1188257.259742 3555627.915255
- it was looping for drain_local_pages.
oom02 R running task 0 2023 1969 0x00000088
0000000000000282 ffff88041d219df0 ffff88041fbf8ef0 ffffffff81100800
ffff880418ab5b18 0000000000000282 ffffffff8100c9ee ffff880418ab5ba8
0000000087654321 0000000000000000 ffff880000000000 0000000000000001
Call Trace:
[<ffffffff81100800>] ? drain_local_pages+0x0/0x20
[<ffffffff8100c9ee>] ? apic_timer_interrupt+0xe/0x20
[<ffffffff81097ea6>] ? smp_call_function_many+0x1b6/0x210
[<ffffffff81097e82>] ? smp_call_function_many+0x192/0x210
[<ffffffff81100800>] ? drain_local_pages+0x0/0x20
[<ffffffff81097f22>] ? smp_call_function+0x22/0x30
[<ffffffff81068184>] ? on_each_cpu+0x24/0x50
[<ffffffff810fe68c>] ? drain_all_pages+0x1c/0x20
[<ffffffff81100d04>] ? __alloc_pages_nodemask+0x4e4/0x840
[<ffffffff81138e09>] ? alloc_page_vma+0x89/0x140
[<ffffffff8111c481>] ? handle_mm_fault+0x871/0xd80
[<ffffffff814a4ecd>] ? schedule+0x3fd/0x980
[<ffffffff8100c9ee>] ? apic_timer_interrupt+0xe/0x20
[<ffffffff8100c9ee>] ? apic_timer_interrupt+0xe/0x20
[<ffffffff814aadd3>] ? do_page_fault+0x143/0x4b0
[<ffffffff8100a7b4>] ? __switch_to+0x194/0x320
[<ffffffff814a4ecd>] ? schedule+0x3fd/0x980
[<ffffffff814a7ad5>] ? page_fault+0x25/0x30
- although the local pages were low.
Node 1 Normal free:8052kB min:8136kB low:10168kB high:12204kB active_anon:8026400kB inactive_anon:0kB active_file:0kB inactive_file:20kB unevictable:0kB isolated(anon):0kB isolated(file):0kB present:8273920kB mlocked:0kB dirty:0kB writeback:0kB mapped:0kB shmem:116kB slab_reclaimable:23728kB slab_unreclaimable:175932kB kernel_stack:176kB pagetables:17136kB unstable:0kB bounce:0kB writeback_tmp:0kB pages_scanned:10 all_unreclaimable? no
lowmem_reserve[]: 0 0 0 0
Node 0 DMA: 0*4kB 0*8kB 1*16kB 0*32kB 2*64kB 1*128kB 1*256kB 0*512kB 1*1024kB 1*2048kB 3*4096kB = 15888kB
Node 0 DMA32: 10*4kB 10*8kB 7*16kB 8*32kB 4*64kB 8*128kB 10*256kB 2*512kB 4*1024kB 2*2048kB 534*4096kB = 2200808kB
Node 0 Normal: 519*4kB 824*8kB 440*16kB 202*32kB 87*64kB 29*128kB 15*256kB 11*512kB 3*1024kB 8*2048kB 1065*4096kB = 4422620kB
Node 1 Normal: 579*4kB 205*8kB 0*16kB 0*32kB 0*64kB 0*128kB 0*256kB 0*512kB 0*1024kB 0*2048kB 1*4096kB = 8052kB
It could also be reproduced by using mempolicy alone. The test just hung at memset() while allocating memory.
set_mempolicy(MPOL_BIND, &nmask, MAXNODES);
while(1) {
s = mmap(NULL, length, PROT_READ|PROT_WRITE,
MAP_ANONYMOUS|MAP_PRIVATE, -1, 0);
memset(s, '\a', length);
}
CAI Qian
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* Re: known oom issues on numa in -mm tree?
2011-01-11 9:46 ` CAI Qian
@ 2011-01-11 9:55 ` CAI Qian
2011-01-11 10:11 ` CAI Qian
2011-01-26 10:45 ` David Rientjes
1 sibling, 1 reply; 13+ messages in thread
From: CAI Qian @ 2011-01-11 9:55 UTC (permalink / raw)
To: David Rientjes; +Cc: linux-mm
----- Original Message -----
> BTW, the latest linux-next also had the similar issue.
>
> - kswapd was running for a long time.
>
> runnable tasks:
> task PID tree-key switches prio exec-runtime sum-exec sum-sleep
> ----------------------------------------------------------------------------------------------------------
> R kswapd1 82 564957.671501 32922 120 564986.657154 1188257.259742
> 3555627.915255
>
> - it was looping for drain_local_pages.
>
> oom02 R running task 0 2023 1969 0x00000088
> 0000000000000282 ffff88041d219df0 ffff88041fbf8ef0 ffffffff81100800
> ffff880418ab5b18 0000000000000282 ffffffff8100c9ee ffff880418ab5ba8
> 0000000087654321 0000000000000000 ffff880000000000 0000000000000001
> Call Trace:
> [<ffffffff81100800>] ? drain_local_pages+0x0/0x20
> [<ffffffff8100c9ee>] ? apic_timer_interrupt+0xe/0x20
> [<ffffffff81097ea6>] ? smp_call_function_many+0x1b6/0x210
> [<ffffffff81097e82>] ? smp_call_function_many+0x192/0x210
> [<ffffffff81100800>] ? drain_local_pages+0x0/0x20
> [<ffffffff81097f22>] ? smp_call_function+0x22/0x30
> [<ffffffff81068184>] ? on_each_cpu+0x24/0x50
> [<ffffffff810fe68c>] ? drain_all_pages+0x1c/0x20
> [<ffffffff81100d04>] ? __alloc_pages_nodemask+0x4e4/0x840
> [<ffffffff81138e09>] ? alloc_page_vma+0x89/0x140
> [<ffffffff8111c481>] ? handle_mm_fault+0x871/0xd80
> [<ffffffff814a4ecd>] ? schedule+0x3fd/0x980
> [<ffffffff8100c9ee>] ? apic_timer_interrupt+0xe/0x20
> [<ffffffff8100c9ee>] ? apic_timer_interrupt+0xe/0x20
> [<ffffffff814aadd3>] ? do_page_fault+0x143/0x4b0
> [<ffffffff8100a7b4>] ? __switch_to+0x194/0x320
> [<ffffffff814a4ecd>] ? schedule+0x3fd/0x980
> [<ffffffff814a7ad5>] ? page_fault+0x25/0x30
>
> - although the local pages were low.
>
> Node 1 Normal free:8052kB min:8136kB low:10168kB high:12204kB
> active_anon:8026400kB inactive_anon:0kB active_file:0kB
> inactive_file:20kB unevictable:0kB isolated(anon):0kB
> isolated(file):0kB present:8273920kB mlocked:0kB dirty:0kB
> writeback:0kB mapped:0kB shmem:116kB slab_reclaimable:23728kB
> slab_unreclaimable:175932kB kernel_stack:176kB pagetables:17136kB
> unstable:0kB bounce:0kB writeback_tmp:0kB pages_scanned:10
> all_unreclaimable? no
> lowmem_reserve[]: 0 0 0 0
> Node 0 DMA: 0*4kB 0*8kB 1*16kB 0*32kB 2*64kB 1*128kB 1*256kB 0*512kB
> 1*1024kB 1*2048kB 3*4096kB = 15888kB
> Node 0 DMA32: 10*4kB 10*8kB 7*16kB 8*32kB 4*64kB 8*128kB 10*256kB
> 2*512kB 4*1024kB 2*2048kB 534*4096kB = 2200808kB
> Node 0 Normal: 519*4kB 824*8kB 440*16kB 202*32kB 87*64kB 29*128kB
> 15*256kB 11*512kB 3*1024kB 8*2048kB 1065*4096kB = 4422620kB
> Node 1 Normal: 579*4kB 205*8kB 0*16kB 0*32kB 0*64kB 0*128kB 0*256kB
> 0*512kB 0*1024kB 0*2048kB 1*4096kB = 8052kB
>
> It could also be reproduced by using mempolicy alone. The test just
> hung at memset() while allocating memory.
>
> set_mempolicy(MPOL_BIND, &nmask, MAXNODES);
> while(1) {
> s = mmap(NULL, length, PROT_READ|PROT_WRITE,
> MAP_ANONYMOUS|MAP_PRIVATE, -1, 0);
> memset(s, '\a', length);
> }
Is it possible that,
drain_all_pages()
on_each_cpu()
drain_local_pages()
Thought that there were still free pages in other node, so it was still
trying to call direct reclaim path?
CAI Qian
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* Re: known oom issues on numa in -mm tree?
2011-01-11 9:55 ` CAI Qian
@ 2011-01-11 10:11 ` CAI Qian
0 siblings, 0 replies; 13+ messages in thread
From: CAI Qian @ 2011-01-11 10:11 UTC (permalink / raw)
To: David Rientjes; +Cc: linux-mm
----- Original Message -----
> ----- Original Message -----
> > BTW, the latest linux-next also had the similar issue.
> >
> > - kswapd was running for a long time.
> >
> > runnable tasks:
> > task PID tree-key switches prio exec-runtime sum-exec sum-sleep
> > ----------------------------------------------------------------------------------------------------------
> > R kswapd1 82 564957.671501 32922 120 564986.657154 1188257.259742
> > 3555627.915255
> >
> > - it was looping for drain_local_pages.
> >
> > oom02 R running task 0 2023 1969 0x00000088
> > 0000000000000282 ffff88041d219df0 ffff88041fbf8ef0 ffffffff81100800
> > ffff880418ab5b18 0000000000000282 ffffffff8100c9ee ffff880418ab5ba8
> > 0000000087654321 0000000000000000 ffff880000000000 0000000000000001
> > Call Trace:
> > [<ffffffff81100800>] ? drain_local_pages+0x0/0x20
> > [<ffffffff8100c9ee>] ? apic_timer_interrupt+0xe/0x20
> > [<ffffffff81097ea6>] ? smp_call_function_many+0x1b6/0x210
> > [<ffffffff81097e82>] ? smp_call_function_many+0x192/0x210
> > [<ffffffff81100800>] ? drain_local_pages+0x0/0x20
> > [<ffffffff81097f22>] ? smp_call_function+0x22/0x30
> > [<ffffffff81068184>] ? on_each_cpu+0x24/0x50
> > [<ffffffff810fe68c>] ? drain_all_pages+0x1c/0x20
> > [<ffffffff81100d04>] ? __alloc_pages_nodemask+0x4e4/0x840
> > [<ffffffff81138e09>] ? alloc_page_vma+0x89/0x140
> > [<ffffffff8111c481>] ? handle_mm_fault+0x871/0xd80
> > [<ffffffff814a4ecd>] ? schedule+0x3fd/0x980
> > [<ffffffff8100c9ee>] ? apic_timer_interrupt+0xe/0x20
> > [<ffffffff8100c9ee>] ? apic_timer_interrupt+0xe/0x20
> > [<ffffffff814aadd3>] ? do_page_fault+0x143/0x4b0
> > [<ffffffff8100a7b4>] ? __switch_to+0x194/0x320
> > [<ffffffff814a4ecd>] ? schedule+0x3fd/0x980
> > [<ffffffff814a7ad5>] ? page_fault+0x25/0x30
> >
> > - although the local pages were low.
> >
> > Node 1 Normal free:8052kB min:8136kB low:10168kB high:12204kB
> > active_anon:8026400kB inactive_anon:0kB active_file:0kB
> > inactive_file:20kB unevictable:0kB isolated(anon):0kB
> > isolated(file):0kB present:8273920kB mlocked:0kB dirty:0kB
> > writeback:0kB mapped:0kB shmem:116kB slab_reclaimable:23728kB
> > slab_unreclaimable:175932kB kernel_stack:176kB pagetables:17136kB
> > unstable:0kB bounce:0kB writeback_tmp:0kB pages_scanned:10
> > all_unreclaimable? no
> > lowmem_reserve[]: 0 0 0 0
> > Node 0 DMA: 0*4kB 0*8kB 1*16kB 0*32kB 2*64kB 1*128kB 1*256kB 0*512kB
> > 1*1024kB 1*2048kB 3*4096kB = 15888kB
> > Node 0 DMA32: 10*4kB 10*8kB 7*16kB 8*32kB 4*64kB 8*128kB 10*256kB
> > 2*512kB 4*1024kB 2*2048kB 534*4096kB = 2200808kB
> > Node 0 Normal: 519*4kB 824*8kB 440*16kB 202*32kB 87*64kB 29*128kB
> > 15*256kB 11*512kB 3*1024kB 8*2048kB 1065*4096kB = 4422620kB
> > Node 1 Normal: 579*4kB 205*8kB 0*16kB 0*32kB 0*64kB 0*128kB 0*256kB
> > 0*512kB 0*1024kB 0*2048kB 1*4096kB = 8052kB
> >
> > It could also be reproduced by using mempolicy alone. The test just
> > hung at memset() while allocating memory.
> >
> > set_mempolicy(MPOL_BIND, &nmask, MAXNODES);
> > while(1) {
> > s = mmap(NULL, length, PROT_READ|PROT_WRITE,
> > MAP_ANONYMOUS|MAP_PRIVATE, -1, 0);
> > memset(s, '\a', length);
> > }
> Is it possible that,
>
> drain_all_pages()
> on_each_cpu()
> drain_local_pages()
>
> Thought that there were still free pages in other node, so it was
> still trying to call direct reclaim path?
It was looping here...
...
zone_watermark_ok()
zone_watermark_ok()
inactive_anon_is_low()
zone_watermark_ok()
mem_cgroup_soft_limit_reclaim()
zone_watermark_ok()
shrink_zone()
shrink_slab()
zone_watermark_ok()
zone_watermark_ok()
inactive_anon_is_low()
zone_watermark_ok()
mem_cgroup_soft_limit_reclaim()
zone_watermark_ok()
shrink_zone()
shrink_slab()
...
CAI Qian
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* Re: known oom issues on numa in -mm tree?
2011-01-11 9:46 ` CAI Qian
2011-01-11 9:55 ` CAI Qian
@ 2011-01-26 10:45 ` David Rientjes
2011-01-28 6:47 ` CAI Qian
1 sibling, 1 reply; 13+ messages in thread
From: David Rientjes @ 2011-01-26 10:45 UTC (permalink / raw)
To: CAI Qian; +Cc: linux-mm
On Tue, 11 Jan 2011, CAI Qian wrote:
> BTW, the latest linux-next also had the similar issue.
>
> - kswapd was running for a long time.
>
I'd be interested to see if this is fixed now that 2ff754fa8f41 (mm: clear
pages_scanned only if draining a pcp adds pages to the buddy allocator)
has been merged in Linus' tree.
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* Re: known oom issues on numa in -mm tree?
2011-01-26 10:45 ` David Rientjes
@ 2011-01-28 6:47 ` CAI Qian
2011-01-28 10:31 ` David Rientjes
0 siblings, 1 reply; 13+ messages in thread
From: CAI Qian @ 2011-01-28 6:47 UTC (permalink / raw)
To: David Rientjes; +Cc: linux-mm
[-- Attachment #1: Type: text/plain, Size: 748 bytes --]
----- Original Message -----
> On Tue, 11 Jan 2011, CAI Qian wrote:
>
> > BTW, the latest linux-next also had the similar issue.
> >
> > - kswapd was running for a long time.
> >
>
> I'd be interested to see if this is fixed now that 2ff754fa8f41 (mm:
> clear
> pages_scanned only if draining a pcp adds pages to the buddy
> allocator)
> has been merged in Linus' tree.
I can still reproduce this similar failure on both AMD and Intel NUMA
systems using the latest linus tree with the commit you mentioned.
Unfortunately, I can't get a clear sysrq/console output of it but only
a part of it (screenshot attached).
It at least very easy to reproduce it for me by running LTP oom01 test
for both Magny-Cours and Nehalem-EX NUMA systems.
CAI Qian
[-- Attachment #2: Screenshot.png --]
[-- Type: image/png, Size: 265476 bytes --]
^ permalink raw reply [flat|nested] 13+ messages in thread
* Re: known oom issues on numa in -mm tree?
2011-01-28 6:47 ` CAI Qian
@ 2011-01-28 10:31 ` David Rientjes
2011-01-28 14:33 ` CAI Qian
0 siblings, 1 reply; 13+ messages in thread
From: David Rientjes @ 2011-01-28 10:31 UTC (permalink / raw)
To: CAI Qian; +Cc: linux-mm
On Fri, 28 Jan 2011, CAI Qian wrote:
> I can still reproduce this similar failure on both AMD and Intel NUMA
> systems using the latest linus tree with the commit you mentioned.
> Unfortunately, I can't get a clear sysrq/console output of it but only
> a part of it (screenshot attached).
>
> It at least very easy to reproduce it for me by running LTP oom01 test
> for both Magny-Cours and Nehalem-EX NUMA systems.
>
Are you sure this is the same issue? The picture you provided doesn't
show the top of the stack so I don't know what it's doing, but the
original report had this:
oom02 R running task 0 2023 1969 0x00000088
0000000000000282 ffff88041d219df0 ffff88041fbf8ef0 ffffffff81100800
ffff880418ab5b18 0000000000000282 ffffffff8100c9ee ffff880418ab5ba8
0000000087654321 0000000000000000 ffff880000000000 0000000000000001
Call Trace:
[<ffffffff81100800>] ? drain_local_pages+0x0/0x20
[<ffffffff8100c9ee>] ? apic_timer_interrupt+0xe/0x20
[<ffffffff81097ea6>] ? smp_call_function_many+0x1b6/0x210
[<ffffffff81097e82>] ? smp_call_function_many+0x192/0x210
[<ffffffff81100800>] ? drain_local_pages+0x0/0x20
[<ffffffff81097f22>] ? smp_call_function+0x22/0x30
[<ffffffff81068184>] ? on_each_cpu+0x24/0x50
[<ffffffff810fe68c>] ? drain_all_pages+0x1c/0x20
[<ffffffff81100d04>] ? __alloc_pages_nodemask+0x4e4/0x840
[<ffffffff81138e09>] ? alloc_page_vma+0x89/0x140
[<ffffffff8111c481>] ? handle_mm_fault+0x871/0xd80
[<ffffffff814a4ecd>] ? schedule+0x3fd/0x980
[<ffffffff8100c9ee>] ? apic_timer_interrupt+0xe/0x20
[<ffffffff8100c9ee>] ? apic_timer_interrupt+0xe/0x20
[<ffffffff814aadd3>] ? do_page_fault+0x143/0x4b0
[<ffffffff8100a7b4>] ? __switch_to+0x194/0x320
[<ffffffff814a4ecd>] ? schedule+0x3fd/0x980
[<ffffffff814a7ad5>] ? page_fault+0x25/0x30
and the reported symptom was kswapd running excessively. I'm pretty sure
I fixed that with 2ff754fa8f41 (mm: clear pages_scanned only if draining a
pcp adds pages to the buddy allocator).
Absent the dmesg, it's going to be very difficult to diagnose an issue
that isn't a panic.
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* Re: known oom issues on numa in -mm tree?
2011-01-28 10:31 ` David Rientjes
@ 2011-01-28 14:33 ` CAI Qian
2011-01-28 14:36 ` CAI Qian
0 siblings, 1 reply; 13+ messages in thread
From: CAI Qian @ 2011-01-28 14:33 UTC (permalink / raw)
To: David Rientjes; +Cc: linux-mm, Andrea Arcangeli
----- Original Message -----
> On Fri, 28 Jan 2011, CAI Qian wrote:
>
> > I can still reproduce this similar failure on both AMD and Intel
> > NUMA
> > systems using the latest linus tree with the commit you mentioned.
> > Unfortunately, I can't get a clear sysrq/console output of it but
> > only
> > a part of it (screenshot attached).
> >
> > It at least very easy to reproduce it for me by running LTP oom01
> > test
> > for both Magny-Cours and Nehalem-EX NUMA systems.
> >
>
> Are you sure this is the same issue? The picture you provided doesn't
> show the top of the stack so I don't know what it's doing, but the
> original report had this:
>
> oom02 R running task 0 2023 1969 0x00000088
> 0000000000000282 ffff88041d219df0 ffff88041fbf8ef0 ffffffff81100800
> ffff880418ab5b18 0000000000000282 ffffffff8100c9ee ffff880418ab5ba8
> 0000000087654321 0000000000000000 ffff880000000000 0000000000000001
> Call Trace:
> [<ffffffff81100800>] ? drain_local_pages+0x0/0x20
> [<ffffffff8100c9ee>] ? apic_timer_interrupt+0xe/0x20
> [<ffffffff81097ea6>] ? smp_call_function_many+0x1b6/0x210
> [<ffffffff81097e82>] ? smp_call_function_many+0x192/0x210
> [<ffffffff81100800>] ? drain_local_pages+0x0/0x20
> [<ffffffff81097f22>] ? smp_call_function+0x22/0x30
> [<ffffffff81068184>] ? on_each_cpu+0x24/0x50
> [<ffffffff810fe68c>] ? drain_all_pages+0x1c/0x20
> [<ffffffff81100d04>] ? __alloc_pages_nodemask+0x4e4/0x840
> [<ffffffff81138e09>] ? alloc_page_vma+0x89/0x140
> [<ffffffff8111c481>] ? handle_mm_fault+0x871/0xd80
> [<ffffffff814a4ecd>] ? schedule+0x3fd/0x980
> [<ffffffff8100c9ee>] ? apic_timer_interrupt+0xe/0x20
> [<ffffffff8100c9ee>] ? apic_timer_interrupt+0xe/0x20
> [<ffffffff814aadd3>] ? do_page_fault+0x143/0x4b0
> [<ffffffff8100a7b4>] ? __switch_to+0x194/0x320
> [<ffffffff814a4ecd>] ? schedule+0x3fd/0x980
> [<ffffffff814a7ad5>] ? page_fault+0x25/0x30
>
> and the reported symptom was kswapd running excessively. I'm pretty
> sure
> I fixed that with 2ff754fa8f41 (mm: clear pages_scanned only if
> draining a
> pcp adds pages to the buddy allocator).
>
> Absent the dmesg, it's going to be very difficult to diagnose an issue
> that isn't a panic.
Finally, have been able to get a sysrq-t output when oom01 is allocating
memory while used/free swap remained unchanged. All kswapd stopped at
zone_reclaim.
# free -m
total used free shared buffers cached
Mem: 48392 48050 341 0 26 31
-/+ buffers/cache: 47993 399
Swap: 50447 29560 20887
oom01 R running task 0 14534 14249 0x00000088
ffff88063fc17d58 0000000000000086 ffff88063fc17d20 000000020000000e
0000000000014d40 ffffea0013cc72d8 ffffea0013cc7188 ffffea0013cc7188
0000000000000297 ffff88063fc17d20 ffff8806371a7788 0000000000000297
Call Trace:
[<ffffffff811043be>] ? release_pages+0x24e/0x260
[<ffffffff81223591>] ? cpumask_any_but+0x31/0x50
[<ffffffff81042552>] ? flush_tlb_mm+0x42/0xa0
[<ffffffff811048c6>] ? __pagevec_release+0x26/0x40
[<ffffffff8110890f>] ? move_active_pages_to_lru+0x19f/0x1d0
[<ffffffff8100c96e>] ? apic_timer_interrupt+0xe/0x20
[<ffffffff8100c96e>] ? apic_timer_interrupt+0xe/0x20
[<ffffffff8100c96e>] ? apic_timer_interrupt+0xe/0x20
[<ffffffff8100c96e>] ? apic_timer_interrupt+0xe/0x20
[<ffffffff810fc51f>] ? zone_watermark_ok+0x1f/0x30
[<ffffffff81139efc>] ? compaction_suitable+0x3c/0xc0
[<ffffffff81109647>] ? shrink_zone+0x1a7/0x520
[<ffffffff811095cd>] ? shrink_zone+0x12d/0x520
[<ffffffff8108cc43>] ? ktime_get_ts+0xb3/0xf0
[<ffffffff81109a7f>] ? do_try_to_free_pages+0xbf/0x4a0
[<ffffffff8110a0d2>] ? try_to_free_pages+0x92/0x130
[<ffffffff81100ccf>] ? __alloc_pages_nodemask+0x45f/0x850
[<ffffffff811395d3>] ? alloc_pages_vma+0x93/0x150
[<ffffffff81148bda>] ? do_huge_pmd_anonymous_page+0x13a/0x330
[<ffffffff8111e79d>] ? handle_mm_fault+0x24d/0x320
[<ffffffff814b21a3>] ? do_page_fault+0x143/0x4b0
[<ffffffff814ac0ce>] ? schedule+0x44e/0xa10
[<ffffffff814aef15>] ? page_fault+0x25/0x30
kswapd0 S ffff88022e28d000 0 275 2 0x00000000
ffff88022e2edda0 0000000000000046 ffffffff81e642c0 ffffffff00000000
0000000000014d40 ffff88022e28ca70 ffff88022e28d000 ffff88022e2edfd8
ffff88022e28d008 0000000000014d40 ffff88022e2ec010 0000000000014d40
Call Trace:
[<ffffffff8110a600>] ? zone_reclaim+0x380/0x400
[<ffffffff8110b196>] kswapd+0xb16/0xc10
[<ffffffff8110a680>] ? kswapd+0x0/0xc10
[<ffffffff814ac0ce>] ? schedule+0x44e/0xa10
[<ffffffff81082fa0>] ? autoremove_wake_function+0x0/0x40
[<ffffffff8110a680>] ? kswapd+0x0/0xc10
[<ffffffff81082916>] kthread+0x96/0xa0
[<ffffffff8100cdc4>] kernel_thread_helper+0x4/0x10
[<ffffffff81082880>] ? kthread+0x0/0xa0
[<ffffffff8100cdc0>] ? kernel_thread_helper+0x0/0x10
kswapd1 S ffff88022e28da30 0 276 2 0x00000000
ffff88022e2efda0 0000000000000046 ffff880337174000 ffff880300000000
0000000000014d40 ffff88022e28d4a0 ffff88022e28da30 ffff88022e2effd8
ffff88022e28da38 0000000000014d40 ffff88022e2ee010 0000000000014d40
Call Trace:
[<ffffffff8110a600>] ? zone_reclaim+0x380/0x400
[<ffffffff8110b196>] kswapd+0xb16/0xc10
[<ffffffff8110a680>] ? kswapd+0x0/0xc10
[<ffffffff814ac0ce>] ? schedule+0x44e/0xa10
[<ffffffff81082fa0>] ? autoremove_wake_function+0x0/0x40
[<ffffffff8110a680>] ? kswapd+0x0/0xc10
[<ffffffff81082916>] kthread+0x96/0xa0
[<ffffffff8100cdc4>] kernel_thread_helper+0x4/0x10
[<ffffffff81082880>] ? kthread+0x0/0xa0
[<ffffffff8100cdc0>] ? kernel_thread_helper+0x0/0x10
kswapd2 S ffff88022e282690 0 277 2 0x00000000
ffff88022e2d9da0 0000000000000046 ffff88052f904000 ffff880500000000
0000000000014d40 ffff88022e282100 ffff88022e282690 ffff88022e2d9fd8
ffff88022e282698 0000000000014d40 ffff88022e2d8010 0000000000014d40
Call Trace:
[<ffffffff8110a600>] ? zone_reclaim+0x380/0x400
[<ffffffff8110b196>] kswapd+0xb16/0xc10
[<ffffffff8110a680>] ? kswapd+0x0/0xc10
[<ffffffff814ac0ce>] ? schedule+0x44e/0xa10
[<ffffffff81082fa0>] ? autoremove_wake_function+0x0/0x40
[<ffffffff8110a680>] ? kswapd+0x0/0xc10
[<ffffffff81082916>] kthread+0x96/0xa0
[<ffffffff8100cdc4>] kernel_thread_helper+0x4/0x10
[<ffffffff81082880>] ? kthread+0x0/0xa0
[<ffffffff8100cdc0>] ? kernel_thread_helper+0x0/0x10
kswapd3 S ffff88022e2830c0 0 278 2 0x00000000
ffff88022e2dbda0 0000000000000046 ffff880637124000 ffff880600000000
0000000000014d40 ffff88022e282b30 ffff88022e2830c0 ffff88022e2dbfd8
ffff88022e2830c8 0000000000014d40 ffff88022e2da010 0000000000014d40
Call Trace:
[<ffffffff8110a600>] ? zone_reclaim+0x380/0x400
[<ffffffff8110b196>] kswapd+0xb16/0xc10
[<ffffffff8110a680>] ? kswapd+0x0/0xc10
[<ffffffff814ac0ce>] ? schedule+0x44e/0xa10
[<ffffffff81082fa0>] ? autoremove_wake_function+0x0/0x40
[<ffffffff8110a680>] ? kswapd+0x0/0xc10
[<ffffffff81082916>] kthread+0x96/0xa0
[<ffffffff8100cdc4>] kernel_thread_helper+0x4/0x10
[<ffffffff81082880>] ? kthread+0x0/0xa0
[<ffffffff8100cdc0>] ? kernel_thread_helper+0x0/0x10
kswapd4 S ffff88022e283af0 0 279 2 0x00000000
ffff88022e301da0 0000000000000046 ffff88082f908000 ffff880800000000
0000000000014d40 ffff88022e283560 ffff88022e283af0 ffff88022e301fd8
ffff88022e283af8 0000000000014d40 ffff88022e300010 0000000000014d40
Call Trace:
[<ffffffff8110a600>] ? zone_reclaim+0x380/0x400
[<ffffffff8110b196>] kswapd+0xb16/0xc10
[<ffffffff8110a680>] ? kswapd+0x0/0xc10
[<ffffffff814ac0ce>] ? schedule+0x44e/0xa10
[<ffffffff81082fa0>] ? autoremove_wake_function+0x0/0x40
[<ffffffff8110a680>] ? kswapd+0x0/0xc10
[<ffffffff81082916>] kthread+0x96/0xa0
[<ffffffff8100cdc4>] kernel_thread_helper+0x4/0x10
[<ffffffff81082880>] ? kthread+0x0/0xa0
[<ffffffff8100cdc0>] ? kernel_thread_helper+0x0/0x10
kswapd5 S ffff88022e278650 0 280 2 0x00000000
ffff88022e303da0 0000000000000046 ffff880937134000 ffff880900000000
0000000000014d40 ffff88022e2780c0 ffff88022e278650 ffff88022e303fd8
ffff88022e278658 0000000000014d40 ffff88022e302010 0000000000014d40
Call Trace:
[<ffffffff8110a600>] ? zone_reclaim+0x380/0x400
[<ffffffff8110b196>] kswapd+0xb16/0xc10
[<ffffffff8110a680>] ? kswapd+0x0/0xc10
[<ffffffff814ac0ce>] ? schedule+0x44e/0xa10
[<ffffffff81082fa0>] ? autoremove_wake_function+0x0/0x40
[<ffffffff8110a680>] ? kswapd+0x0/0xc10
[<ffffffff81082916>] kthread+0x96/0xa0
[<ffffffff8100cdc4>] kernel_thread_helper+0x4/0x10
[<ffffffff81082880>] ? kthread+0x0/0xa0
[<ffffffff8100cdc0>] ? kernel_thread_helper+0x0/0x10
kswapd6 S ffff88022e279080 0 281 2 0x00000000
ffff88022e2c5da0 0000000000000046 ffff880a37134000 ffff880a00000000
0000000000014d40 ffff88022e278af0 ffff88022e279080 ffff88022e2c5fd8
ffff88022e279088 0000000000014d40 ffff88022e2c4010 0000000000014d40
Call Trace:
[<ffffffff8110a600>] ? zone_reclaim+0x380/0x400
[<ffffffff8110b196>] kswapd+0xb16/0xc10
[<ffffffff8110a680>] ? kswapd+0x0/0xc10
[<ffffffff814ac0ce>] ? schedule+0x44e/0xa10
[<ffffffff81082fa0>] ? autoremove_wake_function+0x0/0x40
[<ffffffff8110a680>] ? kswapd+0x0/0xc10
[<ffffffff81082916>] kthread+0x96/0xa0
[<ffffffff8100cdc4>] kernel_thread_helper+0x4/0x10
[<ffffffff81082880>] ? kthread+0x0/0xa0
[<ffffffff8100cdc0>] ? kernel_thread_helper+0x0/0x10
kswapd7 S ffff88022e279ab0 0 282 2 0x00000000
ffff88022e289da0 0000000000000046 ffff880c2f934000 ffff880c00000000
0000000000014d40 ffff88022e279520 ffff88022e279ab0 ffff88022e289fd8
ffff88022e279ab8 0000000000014d40 ffff88022e288010 0000000000014d40
Call Trace:
[<ffffffff8110a600>] ? zone_reclaim+0x380/0x400
[<ffffffff8110b196>] kswapd+0xb16/0xc10
[<ffffffff8110a680>] ? kswapd+0x0/0xc10
[<ffffffff814ac0ce>] ? schedule+0x44e/0xa10
[<ffffffff81082fa0>] ? autoremove_wake_function+0x0/0x40
[<ffffffff8110a680>] ? kswapd+0x0/0xc10
[<ffffffff81082916>] kthread+0x96/0xa0
[<ffffffff8100cdc4>] kernel_thread_helper+0x4/0x10
[<ffffffff81082880>] ? kthread+0x0/0xa0
[<ffffffff8100cdc0>] ? kernel_thread_helper+0x0/0x10
migration/25 R running task 0 90 2 0x00000000
ffff88022f1d9de0 0000000000000046 ffff88083fc54d40 0000000000000000
0000000000014d40 ffff88022f1d2ab0 ffff88022f1d3040 ffff88022f1d9fd8
ffff88022f1d3048 0000000000014d40 ffff88022f1d8010 0000000000014d40
Call Trace:
[<ffffffff810b43d0>] ? stop_machine_cpu_stop+0x0/0xe0
[<ffffffff810b433d>] cpu_stopper_thread+0x13d/0x1d0
[<ffffffff810b4200>] ? cpu_stopper_thread+0x0/0x1d0
[<ffffffff810b4200>] ? cpu_stopper_thread+0x0/0x1d0
[<ffffffff81082916>] kthread+0x96/0xa0
[<ffffffff8100cdc4>] kernel_thread_helper+0x4/0x10
[<ffffffff81082880>] ? kthread+0x0/0xa0
[<ffffffff8100cdc0>] ? kernel_thread_helper+0x0/0x10
kworker/25:0 S ffff88022f1d2610 0 91 2 0x00000000
ffff88022f1fbe50 0000000000000046 ffff88063fc112c8 0000000000000082
0000000000014d40 ffff88022f1d2080 ffff88022f1d2610 ffff88022f1fbfd8
ffff88022f1d2618 0000000000014d40 ffff88022f1fa010 0000000000014d40
Call Trace:
[<ffffffff8107e301>] worker_thread+0x261/0x3c0
[<ffffffff8107e0a0>] ? worker_thread+0x0/0x3c0
[<ffffffff81082916>] kthread+0x96/0xa0
[<ffffffff8100cdc4>] kernel_thread_helper+0x4/0x10
[<ffffffff81082880>] ? kthread+0x0/0xa0
[<ffffffff8100cdc0>] ? kernel_thread_helper+0x0/0x10
...
runnable tasks:
task PID tree-key switches prio exec-runtime sum-exec sum-sleep
----------------------------------------------------------------------------------------------------------
migration/25 90 2150.833956 29 0 2150.833956 0.000920 0.000000 /
R oom01 14534 582482.371064 96026 120 582482.371064 519502.918710 91644.125770 /
kworker/25:2 14592 582470.371064 4811 120 582470.371064 108.496370 207368.125892 /
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^ permalink raw reply [flat|nested] 13+ messages in thread
* Re: known oom issues on numa in -mm tree?
2011-01-28 14:33 ` CAI Qian
@ 2011-01-28 14:36 ` CAI Qian
0 siblings, 0 replies; 13+ messages in thread
From: CAI Qian @ 2011-01-28 14:36 UTC (permalink / raw)
To: David Rientjes; +Cc: linux-mm, Andrea Arcangeli
----- Original Message -----
> ----- Original Message -----
> > On Fri, 28 Jan 2011, CAI Qian wrote:
> >
> > > I can still reproduce this similar failure on both AMD and Intel
> > > NUMA
> > > systems using the latest linus tree with the commit you mentioned.
> > > Unfortunately, I can't get a clear sysrq/console output of it but
> > > only
> > > a part of it (screenshot attached).
> > >
> > > It at least very easy to reproduce it for me by running LTP oom01
> > > test
> > > for both Magny-Cours and Nehalem-EX NUMA systems.
> > >
> >
> > Are you sure this is the same issue? The picture you provided
> > doesn't
> > show the top of the stack so I don't know what it's doing, but the
> > original report had this:
> >
> > oom02 R running task 0 2023 1969 0x00000088
> > 0000000000000282 ffff88041d219df0 ffff88041fbf8ef0 ffffffff81100800
> > ffff880418ab5b18 0000000000000282 ffffffff8100c9ee ffff880418ab5ba8
> > 0000000087654321 0000000000000000 ffff880000000000 0000000000000001
> > Call Trace:
> > [<ffffffff81100800>] ? drain_local_pages+0x0/0x20
> > [<ffffffff8100c9ee>] ? apic_timer_interrupt+0xe/0x20
> > [<ffffffff81097ea6>] ? smp_call_function_many+0x1b6/0x210
> > [<ffffffff81097e82>] ? smp_call_function_many+0x192/0x210
> > [<ffffffff81100800>] ? drain_local_pages+0x0/0x20
> > [<ffffffff81097f22>] ? smp_call_function+0x22/0x30
> > [<ffffffff81068184>] ? on_each_cpu+0x24/0x50
> > [<ffffffff810fe68c>] ? drain_all_pages+0x1c/0x20
> > [<ffffffff81100d04>] ? __alloc_pages_nodemask+0x4e4/0x840
> > [<ffffffff81138e09>] ? alloc_page_vma+0x89/0x140
> > [<ffffffff8111c481>] ? handle_mm_fault+0x871/0xd80
> > [<ffffffff814a4ecd>] ? schedule+0x3fd/0x980
> > [<ffffffff8100c9ee>] ? apic_timer_interrupt+0xe/0x20
> > [<ffffffff8100c9ee>] ? apic_timer_interrupt+0xe/0x20
> > [<ffffffff814aadd3>] ? do_page_fault+0x143/0x4b0
> > [<ffffffff8100a7b4>] ? __switch_to+0x194/0x320
> > [<ffffffff814a4ecd>] ? schedule+0x3fd/0x980
> > [<ffffffff814a7ad5>] ? page_fault+0x25/0x30
> >
> > and the reported symptom was kswapd running excessively. I'm pretty
> > sure
> > I fixed that with 2ff754fa8f41 (mm: clear pages_scanned only if
> > draining a
> > pcp adds pages to the buddy allocator).
> >
> > Absent the dmesg, it's going to be very difficult to diagnose an
> > issue
> > that isn't a panic.
> Finally, have been able to get a sysrq-t output when oom01 is
> allocating
> memory while used/free swap remained unchanged. All kswapd stopped at
> zone_reclaim.
>
> # free -m
> total used free shared buffers cached
> Mem: 48392 48050 341 0 26 31
> -/+ buffers/cache: 47993 399
> Swap: 50447 29560 20887
>
>
> oom01 R running task 0 14534 14249 0x00000088
> ffff88063fc17d58 0000000000000086 ffff88063fc17d20 000000020000000e
> 0000000000014d40 ffffea0013cc72d8 ffffea0013cc7188 ffffea0013cc7188
> 0000000000000297 ffff88063fc17d20 ffff8806371a7788 0000000000000297
> Call Trace:
> [<ffffffff811043be>] ? release_pages+0x24e/0x260
> [<ffffffff81223591>] ? cpumask_any_but+0x31/0x50
> [<ffffffff81042552>] ? flush_tlb_mm+0x42/0xa0
> [<ffffffff811048c6>] ? __pagevec_release+0x26/0x40
> [<ffffffff8110890f>] ? move_active_pages_to_lru+0x19f/0x1d0
> [<ffffffff8100c96e>] ? apic_timer_interrupt+0xe/0x20
> [<ffffffff8100c96e>] ? apic_timer_interrupt+0xe/0x20
> [<ffffffff8100c96e>] ? apic_timer_interrupt+0xe/0x20
> [<ffffffff8100c96e>] ? apic_timer_interrupt+0xe/0x20
> [<ffffffff810fc51f>] ? zone_watermark_ok+0x1f/0x30
> [<ffffffff81139efc>] ? compaction_suitable+0x3c/0xc0
> [<ffffffff81109647>] ? shrink_zone+0x1a7/0x520
> [<ffffffff811095cd>] ? shrink_zone+0x12d/0x520
> [<ffffffff8108cc43>] ? ktime_get_ts+0xb3/0xf0
> [<ffffffff81109a7f>] ? do_try_to_free_pages+0xbf/0x4a0
> [<ffffffff8110a0d2>] ? try_to_free_pages+0x92/0x130
> [<ffffffff81100ccf>] ? __alloc_pages_nodemask+0x45f/0x850
> [<ffffffff811395d3>] ? alloc_pages_vma+0x93/0x150
> [<ffffffff81148bda>] ? do_huge_pmd_anonymous_page+0x13a/0x330
> [<ffffffff8111e79d>] ? handle_mm_fault+0x24d/0x320
> [<ffffffff814b21a3>] ? do_page_fault+0x143/0x4b0
> [<ffffffff814ac0ce>] ? schedule+0x44e/0xa10
> [<ffffffff814aef15>] ? page_fault+0x25/0x30
>
> kswapd0 S ffff88022e28d000 0 275 2 0x00000000
> ffff88022e2edda0 0000000000000046 ffffffff81e642c0 ffffffff00000000
> 0000000000014d40 ffff88022e28ca70 ffff88022e28d000 ffff88022e2edfd8
> ffff88022e28d008 0000000000014d40 ffff88022e2ec010 0000000000014d40
> Call Trace:
> [<ffffffff8110a600>] ? zone_reclaim+0x380/0x400
> [<ffffffff8110b196>] kswapd+0xb16/0xc10
> [<ffffffff8110a680>] ? kswapd+0x0/0xc10
> [<ffffffff814ac0ce>] ? schedule+0x44e/0xa10
> [<ffffffff81082fa0>] ? autoremove_wake_function+0x0/0x40
> [<ffffffff8110a680>] ? kswapd+0x0/0xc10
> [<ffffffff81082916>] kthread+0x96/0xa0
> [<ffffffff8100cdc4>] kernel_thread_helper+0x4/0x10
> [<ffffffff81082880>] ? kthread+0x0/0xa0
> [<ffffffff8100cdc0>] ? kernel_thread_helper+0x0/0x10
> kswapd1 S ffff88022e28da30 0 276 2 0x00000000
> ffff88022e2efda0 0000000000000046 ffff880337174000 ffff880300000000
> 0000000000014d40 ffff88022e28d4a0 ffff88022e28da30 ffff88022e2effd8
> ffff88022e28da38 0000000000014d40 ffff88022e2ee010 0000000000014d40
> Call Trace:
> [<ffffffff8110a600>] ? zone_reclaim+0x380/0x400
> [<ffffffff8110b196>] kswapd+0xb16/0xc10
> [<ffffffff8110a680>] ? kswapd+0x0/0xc10
> [<ffffffff814ac0ce>] ? schedule+0x44e/0xa10
> [<ffffffff81082fa0>] ? autoremove_wake_function+0x0/0x40
> [<ffffffff8110a680>] ? kswapd+0x0/0xc10
> [<ffffffff81082916>] kthread+0x96/0xa0
> [<ffffffff8100cdc4>] kernel_thread_helper+0x4/0x10
> [<ffffffff81082880>] ? kthread+0x0/0xa0
> [<ffffffff8100cdc0>] ? kernel_thread_helper+0x0/0x10
> kswapd2 S ffff88022e282690 0 277 2 0x00000000
> ffff88022e2d9da0 0000000000000046 ffff88052f904000 ffff880500000000
> 0000000000014d40 ffff88022e282100 ffff88022e282690 ffff88022e2d9fd8
> ffff88022e282698 0000000000014d40 ffff88022e2d8010 0000000000014d40
> Call Trace:
> [<ffffffff8110a600>] ? zone_reclaim+0x380/0x400
> [<ffffffff8110b196>] kswapd+0xb16/0xc10
> [<ffffffff8110a680>] ? kswapd+0x0/0xc10
> [<ffffffff814ac0ce>] ? schedule+0x44e/0xa10
> [<ffffffff81082fa0>] ? autoremove_wake_function+0x0/0x40
> [<ffffffff8110a680>] ? kswapd+0x0/0xc10
> [<ffffffff81082916>] kthread+0x96/0xa0
> [<ffffffff8100cdc4>] kernel_thread_helper+0x4/0x10
> [<ffffffff81082880>] ? kthread+0x0/0xa0
> [<ffffffff8100cdc0>] ? kernel_thread_helper+0x0/0x10
> kswapd3 S ffff88022e2830c0 0 278 2 0x00000000
> ffff88022e2dbda0 0000000000000046 ffff880637124000 ffff880600000000
> 0000000000014d40 ffff88022e282b30 ffff88022e2830c0 ffff88022e2dbfd8
> ffff88022e2830c8 0000000000014d40 ffff88022e2da010 0000000000014d40
> Call Trace:
> [<ffffffff8110a600>] ? zone_reclaim+0x380/0x400
> [<ffffffff8110b196>] kswapd+0xb16/0xc10
> [<ffffffff8110a680>] ? kswapd+0x0/0xc10
> [<ffffffff814ac0ce>] ? schedule+0x44e/0xa10
> [<ffffffff81082fa0>] ? autoremove_wake_function+0x0/0x40
> [<ffffffff8110a680>] ? kswapd+0x0/0xc10
> [<ffffffff81082916>] kthread+0x96/0xa0
> [<ffffffff8100cdc4>] kernel_thread_helper+0x4/0x10
> [<ffffffff81082880>] ? kthread+0x0/0xa0
> [<ffffffff8100cdc0>] ? kernel_thread_helper+0x0/0x10
> kswapd4 S ffff88022e283af0 0 279 2 0x00000000
> ffff88022e301da0 0000000000000046 ffff88082f908000 ffff880800000000
> 0000000000014d40 ffff88022e283560 ffff88022e283af0 ffff88022e301fd8
> ffff88022e283af8 0000000000014d40 ffff88022e300010 0000000000014d40
> Call Trace:
> [<ffffffff8110a600>] ? zone_reclaim+0x380/0x400
> [<ffffffff8110b196>] kswapd+0xb16/0xc10
> [<ffffffff8110a680>] ? kswapd+0x0/0xc10
> [<ffffffff814ac0ce>] ? schedule+0x44e/0xa10
> [<ffffffff81082fa0>] ? autoremove_wake_function+0x0/0x40
> [<ffffffff8110a680>] ? kswapd+0x0/0xc10
> [<ffffffff81082916>] kthread+0x96/0xa0
> [<ffffffff8100cdc4>] kernel_thread_helper+0x4/0x10
> [<ffffffff81082880>] ? kthread+0x0/0xa0
> [<ffffffff8100cdc0>] ? kernel_thread_helper+0x0/0x10
> kswapd5 S ffff88022e278650 0 280 2 0x00000000
> ffff88022e303da0 0000000000000046 ffff880937134000 ffff880900000000
> 0000000000014d40 ffff88022e2780c0 ffff88022e278650 ffff88022e303fd8
> ffff88022e278658 0000000000014d40 ffff88022e302010 0000000000014d40
> Call Trace:
> [<ffffffff8110a600>] ? zone_reclaim+0x380/0x400
> [<ffffffff8110b196>] kswapd+0xb16/0xc10
> [<ffffffff8110a680>] ? kswapd+0x0/0xc10
> [<ffffffff814ac0ce>] ? schedule+0x44e/0xa10
> [<ffffffff81082fa0>] ? autoremove_wake_function+0x0/0x40
> [<ffffffff8110a680>] ? kswapd+0x0/0xc10
> [<ffffffff81082916>] kthread+0x96/0xa0
> [<ffffffff8100cdc4>] kernel_thread_helper+0x4/0x10
> [<ffffffff81082880>] ? kthread+0x0/0xa0
> [<ffffffff8100cdc0>] ? kernel_thread_helper+0x0/0x10
> kswapd6 S ffff88022e279080 0 281 2 0x00000000
> ffff88022e2c5da0 0000000000000046 ffff880a37134000 ffff880a00000000
> 0000000000014d40 ffff88022e278af0 ffff88022e279080 ffff88022e2c5fd8
> ffff88022e279088 0000000000014d40 ffff88022e2c4010 0000000000014d40
> Call Trace:
> [<ffffffff8110a600>] ? zone_reclaim+0x380/0x400
> [<ffffffff8110b196>] kswapd+0xb16/0xc10
> [<ffffffff8110a680>] ? kswapd+0x0/0xc10
> [<ffffffff814ac0ce>] ? schedule+0x44e/0xa10
> [<ffffffff81082fa0>] ? autoremove_wake_function+0x0/0x40
> [<ffffffff8110a680>] ? kswapd+0x0/0xc10
> [<ffffffff81082916>] kthread+0x96/0xa0
> [<ffffffff8100cdc4>] kernel_thread_helper+0x4/0x10
> [<ffffffff81082880>] ? kthread+0x0/0xa0
> [<ffffffff8100cdc0>] ? kernel_thread_helper+0x0/0x10
> kswapd7 S ffff88022e279ab0 0 282 2 0x00000000
> ffff88022e289da0 0000000000000046 ffff880c2f934000 ffff880c00000000
> 0000000000014d40 ffff88022e279520 ffff88022e279ab0 ffff88022e289fd8
> ffff88022e279ab8 0000000000014d40 ffff88022e288010 0000000000014d40
> Call Trace:
> [<ffffffff8110a600>] ? zone_reclaim+0x380/0x400
> [<ffffffff8110b196>] kswapd+0xb16/0xc10
> [<ffffffff8110a680>] ? kswapd+0x0/0xc10
> [<ffffffff814ac0ce>] ? schedule+0x44e/0xa10
> [<ffffffff81082fa0>] ? autoremove_wake_function+0x0/0x40
> [<ffffffff8110a680>] ? kswapd+0x0/0xc10
> [<ffffffff81082916>] kthread+0x96/0xa0
> [<ffffffff8100cdc4>] kernel_thread_helper+0x4/0x10
> [<ffffffff81082880>] ? kthread+0x0/0xa0
> [<ffffffff8100cdc0>] ? kernel_thread_helper+0x0/0x10
>
> migration/25 R running task 0 90 2 0x00000000
> ffff88022f1d9de0 0000000000000046 ffff88083fc54d40 0000000000000000
> 0000000000014d40 ffff88022f1d2ab0 ffff88022f1d3040 ffff88022f1d9fd8
> ffff88022f1d3048 0000000000014d40 ffff88022f1d8010 0000000000014d40
> Call Trace:
> [<ffffffff810b43d0>] ? stop_machine_cpu_stop+0x0/0xe0
> [<ffffffff810b433d>] cpu_stopper_thread+0x13d/0x1d0
> [<ffffffff810b4200>] ? cpu_stopper_thread+0x0/0x1d0
> [<ffffffff810b4200>] ? cpu_stopper_thread+0x0/0x1d0
> [<ffffffff81082916>] kthread+0x96/0xa0
> [<ffffffff8100cdc4>] kernel_thread_helper+0x4/0x10
> [<ffffffff81082880>] ? kthread+0x0/0xa0
> [<ffffffff8100cdc0>] ? kernel_thread_helper+0x0/0x10
>
> kworker/25:0 S ffff88022f1d2610 0 91 2 0x00000000
> ffff88022f1fbe50 0000000000000046 ffff88063fc112c8 0000000000000082
> 0000000000014d40 ffff88022f1d2080 ffff88022f1d2610 ffff88022f1fbfd8
> ffff88022f1d2618 0000000000014d40 ffff88022f1fa010 0000000000014d40
> Call Trace:
> [<ffffffff8107e301>] worker_thread+0x261/0x3c0
> [<ffffffff8107e0a0>] ? worker_thread+0x0/0x3c0
> [<ffffffff81082916>] kthread+0x96/0xa0
> [<ffffffff8100cdc4>] kernel_thread_helper+0x4/0x10
> [<ffffffff81082880>] ? kthread+0x0/0xa0
> [<ffffffff8100cdc0>] ? kernel_thread_helper+0x0/0x10
>
> ...
>
> runnable tasks:
> task PID tree-key switches prio exec-runtime sum-exec sum-sleep
> ----------------------------------------------------------------------------------------------------------
> migration/25 90 2150.833956 29 0 2150.833956 0.000920 0.000000 /
> R oom01 14534 582482.371064 96026 120 582482.371064 519502.918710
> 91644.125770 /
> kworker/25:2 14592 582470.371064 4811 120 582470.371064 108.496370
> 207368.125892 /
Then, hung tasks killed off.
INFO: task jbd2/dm-0-8:618 blocked for more than 120 seconds.
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
jbd2/dm-0-8 D ffff88022c5dfa30 0 618 2 0x00000000
ffff88022c601b30 0000000000000046 ffff88022c601ae0 ffffffff00000000
0000000000014d40 ffff88022c5df4a0 ffff88022c5dfa30 ffff88022c601fd8
ffff88022c5dfa38 0000000000014d40 ffff88022c600010 0000000000014d40
Call Trace:
[<ffffffff810f8570>] ? sync_page+0x0/0x50
[<ffffffff814ac700>] io_schedule+0x70/0xc0
[<ffffffff810f85b0>] sync_page+0x40/0x50
[<ffffffff814acfbf>] __wait_on_bit+0x5f/0x90
[<ffffffff810f8773>] wait_on_page_bit+0x73/0x80
[<ffffffff81082fe0>] ? wake_bit_function+0x0/0x50
[<ffffffff81103a95>] ? pagevec_lookup_tag+0x25/0x40
[<ffffffff810f8bb3>] filemap_fdatawait_range+0x113/0x1a0
[<ffffffff8120c6d6>] ? submit_bio+0x86/0x110
[<ffffffff811847bb>] ? bio_alloc_bioset+0x5b/0xf0
[<ffffffff810f8c6b>] filemap_fdatawait+0x2b/0x30
[<ffffffffa01abe2c>] jbd2_journal_commit_transaction+0x74c/0x13f0 [jbd2]
[<ffffffff810714c3>] ? try_to_del_timer_sync+0x83/0xe0
[<ffffffffa01b12c8>] kjournald2+0xb8/0x220 [jbd2]
[<ffffffff81082fa0>] ? autoremove_wake_function+0x0/0x40
[<ffffffffa01b1210>] ? kjournald2+0x0/0x220 [jbd2]
[<ffffffff81082916>] kthread+0x96/0xa0
[<ffffffff8100cdc4>] kernel_thread_helper+0x4/0x10
[<ffffffff81082880>] ? kthread+0x0/0xa0
[<ffffffff8100cdc0>] ? kernel_thread_helper+0x0/0x10
INFO: task flush-253:0:1626 blocked for more than 120 seconds.
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
flush-253:0 D ffff88022e34c5d0 0 1626 2 0x00000080
ffff88022e873630 0000000000000046 ffff880337397c80 ffff880300000000
0000000000014d40 ffff88022e34c040 ffff88022e34c5d0 ffff88022e873fd8
ffff88022e34c5d8 0000000000014d40 ffff88022e872010 0000000000014d40
Call Trace:
[<ffffffff8117fdd0>] ? sync_buffer+0x0/0x50
[<ffffffff814ac700>] io_schedule+0x70/0xc0
[<ffffffff8117fe10>] sync_buffer+0x40/0x50
[<ffffffff814acfbf>] __wait_on_bit+0x5f/0x90
[<ffffffff8117fdd0>] ? sync_buffer+0x0/0x50
[<ffffffff814ad068>] out_of_line_wait_on_bit+0x78/0x90
[<ffffffff81082fe0>] ? wake_bit_function+0x0/0x50
[<ffffffff8117fdce>] __wait_on_buffer+0x2e/0x30
[<ffffffff81180ce8>] bh_submit_read+0x68/0x90
[<ffffffffa01ccb86>] ext4_read_block_bitmap+0x176/0x390 [ext4]
[<ffffffffa01fa346>] ext4_mb_mark_diskspace_used+0x56/0x320 [ext4]
[<ffffffffa020064d>] ? ext4_mb_new_group_pa+0x1ed/0x2d0 [ext4]
[<ffffffffa0201a39>] ext4_mb_new_blocks+0x249/0x500 [ext4]
[<ffffffffa01f400d>] ? ext4_ext_find_extent+0x12d/0x320 [ext4]
[<ffffffff81180290>] ? end_buffer_async_write+0x0/0x1a0
[<ffffffffa01f69ae>] ext4_ext_map_blocks+0x58e/0x1f40 [ext4]
[<ffffffff8113eb00>] ? ____cache_alloc_node+0x100/0x150
[<ffffffff812289a5>] ? radix_tree_gang_lookup_tag_slot+0x95/0xe0
[<ffffffff81103a95>] ? pagevec_lookup_tag+0x25/0x40
[<ffffffffa01d4ed4>] ext4_map_blocks+0xf4/0x210 [ext4]
[<ffffffffa01d6379>] mpage_da_map_and_submit+0xb9/0x440 [ext4]
[<ffffffffa01aa393>] ? jbd2_journal_start+0x13/0x20 [jbd2]
[<ffffffffa01eac00>] ? ext4_journal_start_sb+0xf0/0x130 [ext4]
[<ffffffffa01d6f85>] ext4_da_writepages+0x2f5/0x640 [ext4]
[<ffffffff81102c71>] do_writepages+0x21/0x40
[<ffffffff81177698>] writeback_single_inode+0x98/0x240
[<ffffffff81177cde>] writeback_sb_inodes+0xce/0x170
[<ffffffff811786e9>] writeback_inodes_wb+0x99/0x160
[<ffffffff81178a6b>] wb_writeback+0x2bb/0x430
[<ffffffff81178e0c>] wb_do_writeback+0x22c/0x280
[<ffffffff81178f12>] bdi_writeback_thread+0xb2/0x260
[<ffffffff81178e60>] ? bdi_writeback_thread+0x0/0x260
[<ffffffff81178e60>] ? bdi_writeback_thread+0x0/0x260
[<ffffffff81082916>] kthread+0x96/0xa0
[<ffffffff8100cdc4>] kernel_thread_helper+0x4/0x10
[<ffffffff81082880>] ? kthread+0x0/0xa0
[<ffffffff8100cdc0>] ? kernel_thread_helper+0x0/0x10
INFO: task master:2115 blocked for more than 120 seconds.
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
master D ffff880335951000 0 2115 1 0x00000080
ffff8803359e1a88 0000000000000082 ffff8803359e1cb4 0000000000000000
0000000000014d40 ffff880335950a70 ffff880335951000 ffff8803359e1fd8
ffff880335951008 0000000000014d40 ffff8803359e0010 0000000000014d40
Call Trace:
[<ffffffffa01aafed>] do_get_write_access+0x29d/0x510 [jbd2]
[<ffffffff81082fe0>] ? wake_bit_function+0x0/0x50
[<ffffffffa01ab3b1>] jbd2_journal_get_write_access+0x31/0x50 [jbd2]
[<ffffffffa01f8b0e>] __ext4_journal_get_write_access+0x3e/0x80 [ext4]
[<ffffffffa01d4418>] ext4_reserve_inode_write+0x78/0xa0 [ext4]
[<ffffffffa01aa33b>] ? jbd2__journal_start+0xbb/0x100 [jbd2]
[<ffffffffa01d47cd>] ? ext4_dirty_inode+0x3d/0x60 [ext4]
[<ffffffffa01d449d>] ext4_mark_inode_dirty+0x5d/0x230 [ext4]
[<ffffffffa01aa393>] ? jbd2_journal_start+0x13/0x20 [jbd2]
[<ffffffffa01eac00>] ? ext4_journal_start_sb+0xf0/0x130 [ext4]
[<ffffffffa01d47cd>] ext4_dirty_inode+0x3d/0x60 [ext4]
[<ffffffff81178308>] __mark_inode_dirty+0x38/0x1e0
[<ffffffff8116afdc>] file_update_time+0xec/0x170
[<ffffffff8115c04f>] pipe_write+0x32f/0x680
[<ffffffff81152e5a>] do_sync_write+0xda/0x120
[<ffffffff811e4063>] ? selinux_file_permission+0xf3/0x150
[<ffffffff811dd083>] ? security_file_permission+0x23/0x90
[<ffffffff811533f8>] vfs_write+0xc8/0x190
[<ffffffff811535c1>] sys_write+0x51/0x90
[<ffffffff8100bf82>] system_call_fastpath+0x16/0x1b
INFO: task pickup:2124 blocked for more than 120 seconds.
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
pickup D ffff880635fd25d0 0 2124 2115 0x00000080
ffff880635feda98 0000000000000086 0000000000000006 0000000000000000
0000000000014d40 ffff880635fd2040 ffff880635fd25d0 ffff880635fedfd8
ffff880635fd25d8 0000000000014d40 ffff880635fec010 0000000000014d40
Call Trace:
[<ffffffffa01aafed>] do_get_write_access+0x29d/0x510 [jbd2]
[<ffffffff81082fe0>] ? wake_bit_function+0x0/0x50
[<ffffffffa01ab3b1>] jbd2_journal_get_write_access+0x31/0x50 [jbd2]
[<ffffffffa01f8b0e>] __ext4_journal_get_write_access+0x3e/0x80 [ext4]
[<ffffffffa01d4418>] ext4_reserve_inode_write+0x78/0xa0 [ext4]
[<ffffffffa01aa33b>] ? jbd2__journal_start+0xbb/0x100 [jbd2]
[<ffffffffa01d47cd>] ? ext4_dirty_inode+0x3d/0x60 [ext4]
[<ffffffffa01d449d>] ext4_mark_inode_dirty+0x5d/0x230 [ext4]
[<ffffffffa01aa393>] ? jbd2_journal_start+0x13/0x20 [jbd2]
[<ffffffffa01eac00>] ? ext4_journal_start_sb+0xf0/0x130 [ext4]
[<ffffffffa01d47cd>] ext4_dirty_inode+0x3d/0x60 [ext4]
[<ffffffff81178308>] __mark_inode_dirty+0x38/0x1e0
[<ffffffff8116b18b>] touch_atime+0x12b/0x170
[<ffffffff8115c6b4>] pipe_read+0x2b4/0x4c0
[<ffffffff81152f7a>] do_sync_read+0xda/0x120
[<ffffffff811dd0eb>] ? security_file_permission+0x8b/0x90
[<ffffffff811536c5>] vfs_read+0xc5/0x190
[<ffffffff81153891>] sys_read+0x51/0x90
[<ffffffff8100bf82>] system_call_fastpath+0x16/0x1b
INFO: task sadc:14685 blocked for more than 120 seconds.
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
sadc D ffff88022b929af0 0 14685 14683 0x00000084
ffff88022ae73e08 0000000000000086 0000000000000001 0000000000000000
0000000000014d40 ffff88022b929560 ffff88022b929af0 ffff88022ae73fd8
ffff88022b929af8 0000000000014d40 ffff88022ae72010 0000000000014d40
Call Trace:
[<ffffffffa01b0f5d>] jbd2_log_wait_commit+0xbd/0x130 [jbd2]
[<ffffffff81082fa0>] ? autoremove_wake_function+0x0/0x40
[<ffffffffa01ce3bd>] ext4_sync_file+0x12d/0x330 [ext4]
[<ffffffff8117cd99>] vfs_fsync_range+0x79/0x90
[<ffffffff8117ce1c>] vfs_fsync+0x1c/0x20
[<ffffffff8117ce5a>] do_fsync+0x3a/0x60
[<ffffffff8117ce93>] sys_fdatasync+0x13/0x20
[<ffffffff8100bf82>] system_call_fastpath+0x16/0x1b
INFO: task jbd2/dm-0-8:618 blocked for more than 120 seconds.
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
jbd2/dm-0-8 D ffff88022c5dfa30 0 618 2 0x00000000
ffff88022c601b30 0000000000000046 ffff88022c601ae0 ffffffff00000000
0000000000014d40 ffff88022c5df4a0 ffff88022c5dfa30 ffff88022c601fd8
ffff88022c5dfa38 0000000000014d40 ffff88022c600010 0000000000014d40
Call Trace:
[<ffffffff810f8570>] ? sync_page+0x0/0x50
[<ffffffff814ac700>] io_schedule+0x70/0xc0
[<ffffffff810f85b0>] sync_page+0x40/0x50
[<ffffffff814acfbf>] __wait_on_bit+0x5f/0x90
[<ffffffff810f8773>] wait_on_page_bit+0x73/0x80
[<ffffffff81082fe0>] ? wake_bit_function+0x0/0x50
[<ffffffff81103a95>] ? pagevec_lookup_tag+0x25/0x40
[<ffffffff810f8bb3>] filemap_fdatawait_range+0x113/0x1a0
[<ffffffff8120c6d6>] ? submit_bio+0x86/0x110
[<ffffffff811847bb>] ? bio_alloc_bioset+0x5b/0xf0
[<ffffffff810f8c6b>] filemap_fdatawait+0x2b/0x30
[<ffffffffa01abe2c>] jbd2_journal_commit_transaction+0x74c/0x13f0 [jbd2]
[<ffffffff810714c3>] ? try_to_del_timer_sync+0x83/0xe0
[<ffffffffa01b12c8>] kjournald2+0xb8/0x220 [jbd2]
[<ffffffff81082fa0>] ? autoremove_wake_function+0x0/0x40
[<ffffffffa01b1210>] ? kjournald2+0x0/0x220 [jbd2]
[<ffffffff81082916>] kthread+0x96/0xa0
[<ffffffff8100cdc4>] kernel_thread_helper+0x4/0x10
[<ffffffff81082880>] ? kthread+0x0/0xa0
[<ffffffff8100cdc0>] ? kernel_thread_helper+0x0/0x10
INFO: task flush-253:0:1626 blocked for more than 120 seconds.
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
flush-253:0 D ffff88022e34c5d0 0 1626 2 0x00000080
ffff88022e873630 0000000000000046 ffff880337397c80 ffff880300000000
0000000000014d40 ffff88022e34c040 ffff88022e34c5d0 ffff88022e873fd8
ffff88022e34c5d8 0000000000014d40 ffff88022e872010 0000000000014d40
Call Trace:
[<ffffffff8117fdd0>] ? sync_buffer+0x0/0x50
[<ffffffff814ac700>] io_schedule+0x70/0xc0
[<ffffffff8117fe10>] sync_buffer+0x40/0x50
[<ffffffff814acfbf>] __wait_on_bit+0x5f/0x90
[<ffffffff8117fdd0>] ? sync_buffer+0x0/0x50
[<ffffffff814ad068>] out_of_line_wait_on_bit+0x78/0x90
[<ffffffff81082fe0>] ? wake_bit_function+0x0/0x50
[<ffffffff8117fdce>] __wait_on_buffer+0x2e/0x30
[<ffffffff81180ce8>] bh_submit_read+0x68/0x90
[<ffffffffa01ccb86>] ext4_read_block_bitmap+0x176/0x390 [ext4]
[<ffffffffa01fa346>] ext4_mb_mark_diskspace_used+0x56/0x320 [ext4]
[<ffffffffa020064d>] ? ext4_mb_new_group_pa+0x1ed/0x2d0 [ext4]
[<ffffffffa0201a39>] ext4_mb_new_blocks+0x249/0x500 [ext4]
[<ffffffffa01f400d>] ? ext4_ext_find_extent+0x12d/0x320 [ext4]
[<ffffffff81180290>] ? end_buffer_async_write+0x0/0x1a0
[<ffffffffa01f69ae>] ext4_ext_map_blocks+0x58e/0x1f40 [ext4]
[<ffffffff8113eb00>] ? ____cache_alloc_node+0x100/0x150
[<ffffffff812289a5>] ? radix_tree_gang_lookup_tag_slot+0x95/0xe0
[<ffffffff81103a95>] ? pagevec_lookup_tag+0x25/0x40
[<ffffffffa01d4ed4>] ext4_map_blocks+0xf4/0x210 [ext4]
[<ffffffffa01d6379>] mpage_da_map_and_submit+0xb9/0x440 [ext4]
[<ffffffffa01aa393>] ? jbd2_journal_start+0x13/0x20 [jbd2]
[<ffffffffa01eac00>] ? ext4_journal_start_sb+0xf0/0x130 [ext4]
[<ffffffffa01d6f85>] ext4_da_writepages+0x2f5/0x640 [ext4]
[<ffffffff81102c71>] do_writepages+0x21/0x40
[<ffffffff81177698>] writeback_single_inode+0x98/0x240
[<ffffffff81177cde>] writeback_sb_inodes+0xce/0x170
[<ffffffff811786e9>] writeback_inodes_wb+0x99/0x160
[<ffffffff81178a6b>] wb_writeback+0x2bb/0x430
[<ffffffff81178e0c>] wb_do_writeback+0x22c/0x280
[<ffffffff81178f12>] bdi_writeback_thread+0xb2/0x260
[<ffffffff81178e60>] ? bdi_writeback_thread+0x0/0x260
[<ffffffff81178e60>] ? bdi_writeback_thread+0x0/0x260
[<ffffffff81082916>] kthread+0x96/0xa0
[<ffffffff8100cdc4>] kernel_thread_helper+0x4/0x10
[<ffffffff81082880>] ? kthread+0x0/0xa0
[<ffffffff8100cdc0>] ? kernel_thread_helper+0x0/0x10
INFO: task ntpd:2039 blocked for more than 120 seconds.
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
ntpd D ffff88093661f080 0 2039 1 0x00000080
ffff880935f33ab8 0000000000000082 ffff880337397c80 ffff880335e344f8
0000000000014d40 ffff88093661eaf0 ffff88093661f080 ffff880935f33fd8
ffff88093661f088 0000000000014d40 ffff880935f32010 0000000000014d40
Call Trace:
[<ffffffff8117fdd0>] ? sync_buffer+0x0/0x50
[<ffffffff814ac700>] io_schedule+0x70/0xc0
[<ffffffff8117fe10>] sync_buffer+0x40/0x50
[<ffffffff814acfbf>] __wait_on_bit+0x5f/0x90
[<ffffffff811847bb>] ? bio_alloc_bioset+0x5b/0xf0
[<ffffffff8117fdd0>] ? sync_buffer+0x0/0x50
[<ffffffff814ad068>] out_of_line_wait_on_bit+0x78/0x90
[<ffffffff81082fe0>] ? wake_bit_function+0x0/0x50
[<ffffffff8117fdce>] __wait_on_buffer+0x2e/0x30
[<ffffffffa01dd578>] ext4_find_entry+0x3e8/0x4b0 [ext4]
[<ffffffff811e0611>] ? inode_has_perm+0x51/0xa0
[<ffffffffa01dd6f8>] ? ext4_lookup+0xb8/0x130 [ext4]
[<ffffffffa01dd68d>] ext4_lookup+0x4d/0x130 [ext4]
[<ffffffff8115db35>] d_alloc_and_lookup+0x45/0x90
[<ffffffff81168215>] ? d_lookup+0x35/0x60
[<ffffffff8115f436>] __lookup_hash+0x106/0x1c0
[<ffffffff8116010d>] do_last+0x14d/0x380
[<ffffffff811625e8>] do_filp_open+0x3d8/0x770
[<ffffffff81067798>] ? sys_adjtimex+0x78/0x90
[<ffffffff8116df25>] ? alloc_fd+0x95/0x160
[<ffffffff81151489>] do_sys_open+0x69/0x110
[<ffffffff81151570>] sys_open+0x20/0x30
[<ffffffff8100bf82>] system_call_fastpath+0x16/0x1b
INFO: task master:2115 blocked for more than 120 seconds.
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
master D ffff880335951000 0 2115 1 0x00000084
ffff8803359e1a88 0000000000000082 ffff8803359e1cb4 0000000000000000
0000000000014d40 ffff880335950a70 ffff880335951000 ffff8803359e1fd8
ffff880335951008 0000000000014d40 ffff8803359e0010 0000000000014d40
Call Trace:
[<ffffffffa01aafed>] do_get_write_access+0x29d/0x510 [jbd2]
[<ffffffff81082fe0>] ? wake_bit_function+0x0/0x50
[<ffffffffa01ab3b1>] jbd2_journal_get_write_access+0x31/0x50 [jbd2]
[<ffffffffa01f8b0e>] __ext4_journal_get_write_access+0x3e/0x80 [ext4]
[<ffffffffa01d4418>] ext4_reserve_inode_write+0x78/0xa0 [ext4]
[<ffffffffa01aa33b>] ? jbd2__journal_start+0xbb/0x100 [jbd2]
[<ffffffffa01d47cd>] ? ext4_dirty_inode+0x3d/0x60 [ext4]
[<ffffffffa01d449d>] ext4_mark_inode_dirty+0x5d/0x230 [ext4]
[<ffffffffa01aa393>] ? jbd2_journal_start+0x13/0x20 [jbd2]
[<ffffffffa01eac00>] ? ext4_journal_start_sb+0xf0/0x130 [ext4]
[<ffffffffa01d47cd>] ext4_dirty_inode+0x3d/0x60 [ext4]
[<ffffffff81178308>] __mark_inode_dirty+0x38/0x1e0
[<ffffffff8116afdc>] file_update_time+0xec/0x170
[<ffffffff8115c04f>] pipe_write+0x32f/0x680
[<ffffffff81152e5a>] do_sync_write+0xda/0x120
[<ffffffff811e4063>] ? selinux_file_permission+0xf3/0x150
[<ffffffff811dd083>] ? security_file_permission+0x23/0x90
[<ffffffff811533f8>] vfs_write+0xc8/0x190
[<ffffffff811535c1>] sys_write+0x51/0x90
[<ffffffff8100bf82>] system_call_fastpath+0x16/0x1b
INFO: task pickup:2124 blocked for more than 120 seconds.
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
pickup D ffff880635fd25d0 0 2124 2115 0x00000080
ffff880635feda98 0000000000000086 0000000000000006 0000000000000000
0000000000014d40 ffff880635fd2040 ffff880635fd25d0 ffff880635fedfd8
ffff880635fd25d8 0000000000014d40 ffff880635fec010 0000000000014d40
Call Trace:
[<ffffffffa01aafed>] do_get_write_access+0x29d/0x510 [jbd2]
[<ffffffff81082fe0>] ? wake_bit_function+0x0/0x50
[<ffffffffa01ab3b1>] jbd2_journal_get_write_access+0x31/0x50 [jbd2]
[<ffffffffa01f8b0e>] __ext4_journal_get_write_access+0x3e/0x80 [ext4]
[<ffffffffa01d4418>] ext4_reserve_inode_write+0x78/0xa0 [ext4]
[<ffffffffa01aa33b>] ? jbd2__journal_start+0xbb/0x100 [jbd2]
[<ffffffffa01d47cd>] ? ext4_dirty_inode+0x3d/0x60 [ext4]
[<ffffffffa01d449d>] ext4_mark_inode_dirty+0x5d/0x230 [ext4]
[<ffffffffa01aa393>] ? jbd2_journal_start+0x13/0x20 [jbd2]
[<ffffffffa01eac00>] ? ext4_journal_start_sb+0xf0/0x130 [ext4]
[<ffffffffa01d47cd>] ext4_dirty_inode+0x3d/0x60 [ext4]
[<ffffffff81178308>] __mark_inode_dirty+0x38/0x1e0
[<ffffffff8116b18b>] touch_atime+0x12b/0x170
[<ffffffff8115c6b4>] pipe_read+0x2b4/0x4c0
[<ffffffff81152f7a>] do_sync_read+0xda/0x120
[<ffffffff811dd0eb>] ? security_file_permission+0x8b/0x90
[<ffffffff811536c5>] vfs_read+0xc5/0x190
[<ffffffff81153891>] sys_read+0x51/0x90
[<ffffffff8100bf82>] system_call_fastpath+0x16/0x1b
--
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^ permalink raw reply [flat|nested] 13+ messages in thread
end of thread, other threads:[~2011-01-28 14:36 UTC | newest]
Thread overview: 13+ messages (download: mbox.gz / follow: Atom feed)
-- links below jump to the message on this page --
2011-01-06 8:03 known oom issues on numa in -mm tree? CAI Qian
2011-01-11 0:04 ` David Rientjes
2011-01-11 1:36 ` CAI Qian
2011-01-11 3:18 ` David Rientjes
2011-01-11 3:35 ` CAI Qian
2011-01-11 9:46 ` CAI Qian
2011-01-11 9:55 ` CAI Qian
2011-01-11 10:11 ` CAI Qian
2011-01-26 10:45 ` David Rientjes
2011-01-28 6:47 ` CAI Qian
2011-01-28 10:31 ` David Rientjes
2011-01-28 14:33 ` CAI Qian
2011-01-28 14:36 ` CAI Qian
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